Dennis Rader Explained

Dennis Rader
Birth Name:Dennis Lynn Rader
Alias:BTK
BTK Killer
BTK Strangler
Education:Butler County Community College (AE)
Wichita State University (BS)
Birth Date:9 March 1945
Birth Place:Pittsburg, Kansas
Children:2
Conviction:First degree murder – 10 counts[1]
Conviction Status:Incarcerated[2]
Sentence:Life imprisonment without the possibility of parole for 175 years
(10 consecutive life sentences)
Victims:10–12+
Country:United States
States:Kansas
Motive:Sexual sadism
Beginyear:January 15, 1974 
Endyear: January 19, 1991
Apprehended:February 25, 2005
Imprisoned:El Dorado Correctional Facility
Module:
Embed:yes
Allegiance:United States
Branch:U.S. Air Force
Serviceyears:1966–1970
Rank:Staff sergeant[3]

Dennis Lynn Rader (born March 9, 1945), also known as BTK (an abbreviation he gave himself for "bind, torture, kill"), is an American serial killer who murdered at least 10 people in Wichita and Park City, Kansas, between 1974 and 1991. Although he occasionally killed or attempted to kill men and children, Rader typically targeted women. His victims were often bound, sometimes with objects from their homes, and either suffocated with a plastic bag or manually strangled with a ligature.[4] In addition, he stole keepsakes from his female victims, including underwear, driver's licenses, and personal items.

Rader often sent taunting letters to police and media outlets, describing his crimes in detail.[5] [6] In 2004, after a thirteen-year hiatus, Rader resumed sending letters, leading to his 2005 arrest and subsequent guilty plea. He is currently serving ten consecutive life sentences at the El Dorado Correctional Facility.[2]

Life and background

Dennis Lynn Rader was born in Pittsburg, Kansas, on March 9, 1945. His parents were bookkeeper Dorothea Mae Rader (; September 17, 1925 – October 14, 2007) and Kansas Gas Service worker William Elvin Rader (November 21, 1922 – December 27, 1996).[7] [8] [9] He was the eldest of four sons. Growing up in Wichita, Rader later recalled feeling ignored by his mother. Both of his parents worked long hours and paid little attention to their children at home.[10]

From a young age, Rader harbored sadistic sexual fantasies about torturing "trapped and helpless" women.[10] [11] He also exhibited zoosadism by torturing, killing and hanging small animals.[12] [13] Rader acted out sexual fetishes for voyeurism, autoerotic asphyxiation and cross-dressing, often spying on female neighbors while dressed in women's clothing, including women's underwear that he had stolen. He also masturbated with ropes or other bindings around his arms and neck.[14]

Years later, during his "cooling off" periods between murders, Rader would take pictures of himself wearing women's clothes and a female mask while bound. He later admitted that he was pretending to be his victims as part of his sexual fantasy.[15] However, Rader kept his proclivities well hidden, and was widely regarded in his community as "normal, polite, and well mannered."

After graduating from Wichita Heights High School,[16] Rader attended Kansas Wesleyan University. He received only mediocre grades and dropped out after one year. Rader served in the United States Air Force from 1966 to 1970.[17] On discharge, he moved to Park City, a suburb of Wichita, where he worked in the meat department of an IGA supermarket where his mother was employed as a bookkeeper.[18]

Rader married Paula Dietz on May 22, 1971. They had two children, Kerri and Brian.[19] He attended Butler County Community College in El Dorado, earning an associate degree in electronics engineering in 1973.[20] He then enrolled at Wichita State University and graduated in 1979 with a Bachelor of Science degree, majoring in administration of justice.

Rader initially worked as an assembler for the Coleman Company, an outdoor supply company. He then worked at the local Wichita office of ADT Security Services from 1974 to 1988, where he installed security alarms. Ironically, many of his clients were concerned homeowners seeking security from his own killings as BTK.[21] Rader was a field operations supervisor for the Wichita area for the 1990 federal census.[22]

In May 1991, Rader became a dogcatcher and compliance officer in Park City.[23] [24] [25] In this position, neighbors recalled him as being sometimes overzealous and extremely strict, as well as taking special pleasure in bullying and harassing single women.[26] Two women he stalked in the 1980s, and one whom he stalked in the mid-1990s, filed restraining orders against him; one of these women also changed her address to avoid him.[27] One neighbor complained that Rader killed her dog for no reason.[28] Rader was a member of Christ Lutheran Church in Wichita, and at one point was elected president of the church council.[29] He was also a Cub Scout leader and would frequently use being with the scouts as his alibi when a BTK killing was discovered.

By the 2000s, the public's memories of the murders had begun to fade. Local author Robert Beattie began writing a book about the killings, Nightmare in Wichita, after being shocked that many young people he spoke to had never heard of the BTK case. Hungry for attention, Rader re-emerged as BTK in 2004 after learning that the book was being written.[30]

On July 26, 2005, after Rader's arrest, his wife was granted an emergency divorce, waiving the normal sixty-day waiting period.[31] [32] [33] [34] In an interview with ABC News in 2019, his daughter Kerri stated she writes to her father and has now forgiven him, but still struggles to reconcile her "normal" childhood with the knowledge that she was raised by the BTK killer.[35] However, at the 2024 Crime Con in Nashville, Tennessee, Kerri revealed excerpts from her father's journal that revealed he had sexually abused her as a young girl.[36]

Case history

Confirmed murders

Otero Murders

On January 15, 1974, four members of the Otero family were murdered in Wichita.[37] The victims were Joseph Otero Sr. (38), Julia Maria "Julie" Otero (33), Joseph "Joey" Otero II (9) and Josephine "Josie" Otero (11). Their bodies were discovered by the family's three older children, who had been at school at the time of the killings.[38] After his 2005 arrest, Rader confessed to the Otero murders.[39] He claimed that he first targeted the family two months prior, when he spotted Julie leaving to take her children to school and followed them. On the morning of January 15, Rader cut the phone lines and entered the Otero residence when Joey opened the back door for the family dog.

Rader told the Otero family that he was a "wanted" man in California before he ordered them to lie on the living room floor at gunpoint. Then, he led the family into a bedroom and bound them with rope he had prepared. Joseph and Joey were on the floor, while Julie and Josie were on the bed.[39] The wrists and feet of Joseph and Julie were restrained. Joseph's head was covered by a plastic bag, which Rader then secured with ropes. After Joseph chewed a hole in the bag, another bag was tightened over his head, causing him to slowly suffocate to death.[39]

Rader attempted to strangle Julie, later recalling: "Mrs. Otero woke back up. She was pretty upset with what was going on, and she asked me to save her son, so I took the bag off. She screamed, 'You killed my boy! You killed my boy!' After the initial realization and shock, she communicated, 'God have mercy on your soul,' before I put her down, permanently." Rader strangled Julie to death with rope.[39] With both parents dead, Rader then placed another plastic bag, followed by two T-shirts and an additional bag, over Joey's head, watching as he thrashed and suffocated.[39] Afterward, Rader led Josie down into the basement, where he hanged her with a noose from a pipe. Later, police found Rader's semen near Josie's partially clothed body. Rader eventually wrote a letter that he stashed inside an engineering book in the Wichita Public Library in October 1974, describing the Otero killings in detail.

Murder of Kathryn Bright

On April 4, 1974, Rader broke into the Wichita home of Kathryn Doreen Bright (21) through her screen door but was taken aback to discover her 19-year-old brother, Kevin Bright, was also present in the property. He transported Kathryn to another bedroom and tied her down after forcing Kevin, who was being held at gunpoint, to restrain his sister with a rope Rader had provided.[40] Rader attempted to strangle Kathryn before stabbing her three times in the back and lower abdomen with a knife when she struggled too much.[41] Kevin was also strangled and shot in the head, but he survived by feigning death and later escaping.[42] [43]

Murder of Shirley Ruth Relford

On March 17, 1977, Shirley Ruth Relford (25) was found dead in her home in Wichita. Rader was pursuing Relford and located her by following her 5-year-old son to her home. Rader entered their residence and produced a handgun from his jacket, frightening the family. After tying up her three children and locking them in the bathroom, Rader took Relford to the rear bedroom. Relford vomited before being tied to her bedpost by her legs. Rader strangled her with rope after placing a plastic bag over her head, while her children screamed and banged down the hallway. Similar to the Otero murders, Rader intended to murder Relford's children, although they were ultimately able to escape before he could do so.[44]

Murder of Nancy Jo Fox

When Rader noticed Nancy Jo Fox (25) going into her home in Wichita, he marked her as a potential victim and began stalking her. On December 8, 1977, Rader knocked at her door. When nobody answered, he cut the phone lines before breaking in to wait for Fox in her kitchen. Her murder would be described by Rader as "what I call a perfect – perfect hit. Although she gave me a lot of verbal static, she cooperated, and she didn't fight me. I had complete control of her, that's why it was one of the more enjoyable kills, as I call them." Rader killed Fox by strangling her with his belt on her bed. Before she died, Rader told her that he was responsible for the Otero murders. The following day, Rader called police from a payphone, telling them they would find Fox's body at her home.[45]

BTK asks for infamy

On February 10, 1978,[46] Rader sent another letter to Wichita television station KAKE claiming responsibility for the murders. He suggested many possible names for himself, including "BTK." He demanded media attention in this second letter, saying, "How many do I have to kill, before I get a name in the paper or some national attention?" A poem was enclosed titled "Oh! Death to Nancy," a parody of the lyrics to the American folk song "O Death".[47] [48] In the letter, Rader claimed to be driven to kill by "factor X," which he characterized as a supernatural element that also motivated Jack the Ripper, the Son of Sam and the Hillside Stranglers.[49] He also asked for the police to send him a hidden message. In response, and with the knowledge that the BTK killer watched KAKE, police decided to flash a subliminal message during one of the station's evening newscasts for a split second. The message stated: "Now call the chief," and featured a drawing of an upside-down pair of glasses, which were found at the Fox crime scene.[50] They hoped the message would influence the killer to turn himself in, but it was unsuccessful.[51]

Attempted murder of Anna Williams

During this time, Rader also intended to kill others, such as Anna Williams (63), who, in 1979, escaped death by returning home much later than expected. Rader explained during his confession that he became obsessed with Williams and was "absolutely livid" when she evaded him. He recalled spending hours waiting at Williams' home but becoming impatient and leaving when she did not return from visiting friends.[52]

Murder of Marine Hedge

Marine Hedge (53) was found on May 5, 1985, at East 53rd Street North in Wichita, between North Webb Road and North Greenwich Road. Rader had killed her on April 27 and took her body to Christ Lutheran Church, where he was the president of the church council. There, he photographed her body in various suggestive positions. Rader had previously stored black plastic sheets and other materials at the church in preparation for the murder and then, later, dumped the body in a remote ditch.[53]

Murder of Vicki Wegerle

On September 16, 1986, Rader strangled Vicki Lynn Wegerle (28) to death with a nylon stocking at her house in Wichita. He entered the residence by pretending to be a telephone repairman. After the murder, he rearranged her clothes and took a number of photographs of her nude body.

Murder of Dolores Davis

His final victim, Dolores Earline "Dee" Davis (62), was found dead on February 1, 1991, at West 117th Street North and North Meridian Street in Park City. Rader had killed her on January 19 by strangling her with pantyhose.[54]

Suspected murders

On August 23, 2023, the Associated Press reported that Rader was considered the prime suspect in two further killings in Oklahoma and Missouri. Authorities discovered "possible trophies" from victims after launching a search for evidence at Rader's former Park City home, resulting in the investigation of his potential involvement in additional unsolved disappearances and murders:[55]

Cold case

By 2004, the investigation of the BTK killer was considered a cold case. However, Rader initiated a series of 11 communications to local media, which led directly to his arrest in February 2005. In March 2004, The Wichita Eagle received a letter from someone using the name "Bill Thomas Killman" claiming that he had murdered Vicki Wegerle in 1986. Enclosed with the message were photographs of the crime scene and a photocopy of Wegerle's driver's license, which had been stolen at the time of the crime.[60] Prior to this message, it had not been definitively established that Wegerle was killed by BTK. DNA collected from under her fingernails provided police with previously unknown evidence. They began DNA testing hundreds of men in an effort to find the killer.[61] Altogether, more than 1,300 DNA samples were taken and later destroyed by court order.[62]

In May 2004, KAKE received a letter with chapter headings for the "BTK Story", fake IDs and a word puzzle. On June 9, a package was found taped to a stop sign at the corner of First and Kansas roads in Wichita, which contained graphic descriptions of the Otero murders and a sketch labeled "The Sexual Thrill Is My Bill."[63] Also enclosed was a chapter list for a proposed book titled The BTK Story, which mimicked a story written in 1999 by Court TV crime writer David Lohr. Chapter One was titled "A Serial Killer Is Born." In July, a package dropped into the return slot at a public library contained more bizarre material, including the claim that BTK was responsible for the death of 19-year-old Jake Allen in Argonia, Kansas, earlier that month. This claim was false, and that death was ruled a suicide.[64]

After his capture, Rader admitted in his interrogation that he had been planning to kill again, that he had set a date (October 2004) and was stalking his intended victim. That month, a manila envelope was dropped into a UPS box in Wichita. It contained many cards with images of terror and bondage of children pasted on them, a poem threatening the life of lead investigator Lieutenant Ken Landwehr and a false autobiography with many details about Rader's life. These details were later released to the public.[65] In December 2004, Wichita police received another package from the killer.[66] This time, the package was found in Wichita's Murdock Park. It contained the driver's license of Nancy Fox, which was noted as stolen from the crime scene, as well as a doll that was symbolically bound at the hands and feet with a plastic bag tied over its head.

In January 2005, Rader attempted to leave a cereal box in the bed of a pickup truck at a Home Depot in Wichita, but the box was discarded by the truck's owner.[67] It was later retrieved from the trash after Rader asked what had become of it in a later message. Surveillance tape of the parking lot from that date revealed a distant figure driving a black Jeep Cherokee leaving the box in the pickup. In February 2005, more postcards were sent to KAKE, and another cereal box left at a rural location was found to contain another bound doll.[68]

In his letters to police, Rader asked if his writings, if put on a floppy disk, could be traced or not. The police answered his question in a newspaper ad posted in the Eagle, saying it would be safe to use the disk. On February 16, 2005, Rader sent a purple 1.44-megabyte Memorex floppy disk to Wichita station KSAS-TV. Also enclosed were a letter, a gold-colored necklace with a large medallion and a photocopy of the cover of Rules of Prey, a 1989 novel by John Sandford about a serial killer.[69] Police found metadata embedded in a deleted Microsoft Word document that was, unknown to Rader, still stored on the floppy disk.[70] The metadata contained the words "Christ Lutheran Church" and the document was marked as last modified by "Dennis."[71] An Internet search determined that a "Dennis Rader" was president of the church council.[72] When investigators drove by Rader's house, a black Jeep Cherokee—the type of vehicle seen in the Home Depot surveillance footage—was parked outside.[73] This was strong circumstantial evidence against Rader, but they needed more direct evidence to detain him.[74]

Police obtained a warrant to test a pap smear taken from Rader's daughter at the Kansas State University medical clinic. DNA tests showed a "familial match" between the pap smear and the sample from Wegerle's fingernails; this indicated that the killer was closely related to Rader's daughter and, combined with the other evidence, was enough for police to arrest Rader.[75]

Arrest

Rader was arrested while driving near his home in Park City shortly after noon on February 25, 2005.[76] An officer asked, "Mr. Rader, do you know why you're going downtown?" Rader replied, "Oh, I have suspicions why."[77] [78] Wichita Police, the Kansas Bureau of Investigation, the FBI and ATF agents searched Rader's home and vehicle, seizing evidence including computer equipment, a pair of black pantyhose retrieved from a shed and a cylindrical container. Christ Lutheran Church, Rader's office and the main branch of the Park City library were also searched. At a press conference the next morning, Wichita Police Chief Norman Williams announced, "The bottom line: BTK is arrested."[79] [80]

Legal proceedings

On February 28, 2005, Rader was charged with 10 counts of first degree murder.[81] Soon afterward, the Associated Press cited an anonymous source alleging that Rader had confessed to other murders in addition to those with which he had been connected.[82] However, the Sedgwick County district attorney denied the story, yet refused to say whether Rader had made any confessions or if investigators were looking into his possible involvement in more unsolved killings.[83] On March 5, news sources claimed to have verified by multiple sources that Rader had confessed to the 10 murders he was charged with, but no other ones.[84]

On March 1, Rader's bail was set at US$10 million, and a public defender was appointed to represent him.[85] On May 3, the judge entered not guilty pleas on Rader's behalf, as Rader did not speak at his arraignment;[86] however, on June 27, the scheduled trial date, Rader changed his plea to guilty. He described the murders in detail to the court and made no apologies.[87] [88] [89] [90] [91]

At Rader's August 18 sentencing, victims' families made statements, after which Rader apologized in a rambling 30-minute monologue[92] that the prosecutor likened to an Academy Awards acceptance speech. His statement has been described as an example of an often-observed phenomenon among psychopaths: their inability to understand the emotional content of language.[93] Rader was sentenced to 10 consecutive life sentences, with a minimum of 175 years.[94] Kansas did not enforce the death penalty at the time of the murders.[95] On August 19, Rader was moved to the El Dorado Correctional Facility.[96]

Rader talked about innocuous topics such as the weather during the forty-minute drive to El Dorado but began to cry when the victims' families' statements from the court proceedings came on the radio. He is now in solitary confinement for his protection (with one hour of exercise per day and showers three times per week). This will likely continue until his death. Beginning in 2006, Rader was allowed access to television and radio, to read magazines and other privileges for good behavior.[97]

Further investigations

Following Rader's arrest, police in Wichita and several surrounding cities looked into unsolved cases with the cooperation of the state police and the FBI. They particularly focused on cases after 1994, when the death penalty was reinstated in Kansas. Police in surrounding states also investigated cold cases that fit Rader's pattern. After exhaustive investigations, none of these agencies discovered any further murders attributable to Rader, supporting early suspicions that he would have taken responsibility for any additional murders that he had committed. As a result, the ten known murders were at that point believed to be the only murders for which Rader was actually responsible, although Wichita police are fairly certain that he stalked and researched a number of other potential victims. This includes one person who was saved when Rader called off his planned attack upon his arrival near the target's home due to the presence of construction and road crews nearby. Rader stated in his police interview that "there are a lot of lucky people", meaning that he had thought about and developed various levels of murder plans for other victims.

Psychological evaluation

Massachusetts psychologist Robert Mendoza was hired by Rader's public defenders to conduct a psychological evaluation and determine if an insanity-based defense might be viable. He conducted an interview after Rader had pleaded guilty on June 27, 2005. Mendoza diagnosed Rader with narcissistic, obsessive-compulsive and antisocial personality disorders: he observed that Rader has a grandiose sense of self, a belief that he is "special" and therefore entitled to special treatment; a pathological need for attention and admiration; a preoccupation with maintaining rigid order and structure; and a complete lack of empathy.[98]

The videotape of Mendoza's interview ended up being used on NBC's Dateline. NBC claimed Rader knew the interview might be televised, but this was false according to the Sedgwick County Sheriff's Office. Rader mentioned the interview during his sentencing statement. On October 25, 2005, the Kansas attorney general filed a petition to sue Mendoza and Tali Waters, co-owners of Cambridge Forensic Consultants LLC, for breach of contract, claiming that they intended to benefit financially from the use of information obtained through involvement in Rader's defense. On May 10, 2007, Mendoza settled the case for US$30,000 with no admission of wrongdoing.[99]

Victims

NameSexAgeDate of murderPlace of murderCause of deathWeapon used
Joseph OteroM38January 15, 1974803 N. Edgemoor Street, WichitaSuffocatedPlastic bag
Julia Maria OteroF33StrangledRope
Joseph Otero Jr.M9SuffocatedPlastic bag
Josephine OteroF11Rope
Kathryn Doreen BrightF21April 4, 19743217 E. 13th Street N., Wichita
(died at Wesley Medical Center)
Stabbed three times
in abdomen[100]
Knife
Kevin BrightM19N/A (escaped)Gun[101] [102]
Shirley Ruth Vian RelfordF24March 17, 19771311 S. Hydraulic Street, WichitaStrangledRope
Nancy Jo FoxF25December 8, 1977843 S. Pershing Street, WichitaStrangledBelt
Marine Wallace HedgeF53April 27, 19856254 N. Independence Street,
Park City
StrangledHand(s)
Vicki Lynn WegerleF28September 16, 19862404 W. 13th Street N., WichitaStrangledNylon stocking
Dolores Earline Johnson DavisF62January 19, 19916226 N. Hillside Street, Wichita
(east of Park City)
StrangledPantyhose

In media

Forensic psychologist Katherine Ramsland compiled Confession of a Serial Killer from her five-year correspondence with Rader.[103] Multiple works draw on the case:

See also

Further reading

External links

Notes and References

  1. Web site: KDOC inmate number 0083707 . July 25, 2019.
  2. Web site: Disclaimer. kdocrepository.doc.ks.gov.
  3. News: Hegeman . Roxana . March 17, 2015 . BTK suspect served in Alabama . . Associated Press.
  4. Book: Siegel, Larry . Criminology: Theories, Patterns, and Typologies . 2012 . . Boston, Massachusetts . 978-1-133-71052-3 . 353 . July 11, 2014 . https://web.archive.org/web/20140728001507/http://books.google.com/books?id=BbsJAAAAQBAJ&pg=PA353 . July 28, 2014 . live .
  5. Book: Bauer, Craig P. . Secret History: The Story of Cryptology . March 25, 2013 . . Boca Raton, Florida. 978-1-4665-6186-1 . 17 . July 11, 2014 . https://web.archive.org/web/20140727084825/http://books.google.com/books?id=EBkEGAOlCDsC&pg=PR17 . July 27, 2014 . live .
  6. Book: Hickey, Eric W. . Serial Murderers and Their Victims . 2012 . . Boston, Massachusetts . 978-1-285-40168-3 . 254 . July 11, 2014 . https://web.archive.org/web/20140720155542/http://books.google.com/books?id=Ob0KAAAAQBAJ&pg=PA254 . July 20, 2014 . live .
  7. Book: John E. Douglas

    . Douglas . John . John E. Douglas. Inside the Mind of BTK . 2008 . . Hoboken, New Jersey. 9780470325155 . 130. Dennis Lynn Rader was born just outside the tiny town of Columbus, Kansas, on March 9, 1945 ....

  8. Book: Katherine Ramsland

    . Ramsland . Katherine M. . Katherine Ramsland. Confession of a Serial Killer . 2016 . . Lebanon, New Hampshire. 9781611689730 . 36 .

  9. News: Minutaglio. Rader was born on March 9, 1945 in the tiny town of Pittsburg, Kansas. . Rose . The BTK Killer Brutally Murdered 10 People. In Chilling New Audio, He Explains Why. . June 27, 2021 . . August 30, 2018.
  10. Web site: BTK serial killer Dennis Rader said 'a demon within me' made him murder. Fox News. News Corp. New York City. news.au.com. September 4, 2018. October 17, 2019.
  11. Hannah. Murphy. BTK Serial Killer: What We Learned From Confessional New Book. Rolling Stone. Wenner Media LLC. New York City. September 12, 2016. October 15, 2019.
  12. Book: Mellor, Lee. Joan. Swart. Lee. Mellor. Homicide: A Forensic Psychology Textbook. Sexually Sadistic Homicide Offenders. CRC Press. Boca Raton, Florida. 2016. 978-1-315-37001-9. 138.
  13. News: Matthew I.. Crawford. Profile of a Serial Killer: Dennis Rader, the BTK Strangler. The Crimewire. Purdue University. Lafayette, Indiana. March 8, 2017.
  14. Book: Ramsland . Katherine . Confession of a Serial Killer: The Untold Story of Dennis Rader, the BTK Killer . August 30, 2016 . ForeEdge . 978-1611688412 . 131.
  15. Web site: Aly. Vander Hayden. The Creepy Bondage Selfies The BTK Took In Between His Murders. Oxygen. NBCUniversal. New York City. August 31, 2018. October 17, 2019.
  16. Web site: Scott A.. Bonn. February 7, 2022. Evolution of a Serial Killer: Dennis Rader, BTK . Psychology Today.
  17. News: Sylvester . Ron . Investigators tell of grisly crimes, Rader's delight . https://web.archive.org/web/20140219045210/https://www.kansas.com/2005/08/18/19161/litany-of-horror.html . dead . February 19, 2014 . April 21, 2019 . . March 14, 2007 .
  18. News: A Double Life: Dennis Rader lived quietly while killing 10 . . July 11, 2014 . https://web.archive.org/web/20140103182155/http://media.kansas.com/pdfs/btk/022905btkrader_timeline.pdf . January 3, 2014 . live.
  19. Web site: King . Gary C. . Allen . Kevin P. . Criminal Profile: Dennis Lynn Rader . . . July 11, 2014 . https://web.archive.org/web/20121231133739/http://investigation.discovery.com/criminals/serial-killers/dennis-rader.html . December 31, 2012.
  20. Book: Wenzl . Roy . Potter . Tim . Laviana . Hurst . Kelly . L. . Bind, Torture, Kill: The Inside Story of BTK, the Serial Killer Next Door . July 11, 2014 . May 27, 2008 . . New York City. 978-0-06-137395-4 . https://web.archive.org/web/20140729003334/http://books.google.com/books?id=VVV9KLQMEDEC . July 29, 2014 . live.
  21. News: Twiddy . David . BTK Suspect's Career in Security Probed . https://web.archive.org/web/20140714221845/http://www.highbeam.com/doc/1P1-105855357.html . dead . July 14, 2014 . July 11, 2014 . . March 1, 2005.
  22. Book: McClellan, Janet . Erotophonophilia: Investigating Lust Murder . May 18, 2010 . July 11, 2014 . . Amherst, New York. 978-1-62196-929-7 . 157, 173 . https://web.archive.org/web/20140729165519/http://books.google.com/books?id=1ObDVYYMCJIC&pg=PA157 . July 29, 2014 . live .
  23. News: Buselt . Lori O'Toole . Park City Council dismisses Rader. January 21, 2015 . The Wichita Eagle. March 3, 2005. https://web.archive.org/web/20050305052051/http://www.kansas.com/mld/kansas/news/special_packages/btk/11037860.htm. March 5, 2005.
  24. News: Neighbor: I Watched BTK Suspect Shoot Dog . July 11, 2014 . . February 27, 2005 . https://web.archive.org/web/20140715000554/https://abcnews.go.com/GMA/LegalCenter/story?id=535740 . July 15, 2014 . live .
  25. Meadows . Bob . Klise . Kate . Comander . Lauren . Grisby . Lorna . Haederle . Michael . The BTK Case: the Killer Unmasked? . . Meredith Corporation. New York City. March 21, 2005 . 63 . 11 . July 11, 2014 . The trait served Rader well in his next job, as a compliance officer for Park City, a Wichita suburb—but his nit-picking won him few friends. . https://web.archive.org/web/20140715002949/http://www.people.com/people/archive/article/0,,20147134,00.html . July 15, 2014 . live .
  26. News: Lois . Romano . Portrait of Suspect in BTK Cases Emerging . . March 6, 2005 . January 8, 2022.
  27. A&E Documentary Special – The BTK Killer Speaks
  28. Web site: People at CLC – Christ Lutheran Church – Wichita, Kansas . https://web.archive.org/web/20050206044729/http://www.christ-lutheran.org/people/ . February 6, 2005 . dead .
  29. https://www.kansas.com/news/special-reports/btk/article1003742.html The Wichita Eagle, 2005
  30. News: Paula and Dennis Raders' divorce granted . June 9, 2023 . kansas.com . July 27, 2005.
  31. News: Raders' divorce granted . July 11, 2014 . . March 27, 2012 . https://web.archive.org/web/20140714153055/http://www.kansas.com/2005/07/27/19142/raders-divorce-granted.html . July 14, 2014 . dead .
  32. News: BTK killer's wife granted an emergency divorce . July 11, 2014 . . Associated Press. July 27, 2005 . https://web.archive.org/web/20140714200629/http://www.nbcnews.com/id/8721125/ns/us_news-crime_and_courts/ . July 14, 2014 . live .
  33. Web site: How Do I File for Divorce in Kansas? . divorcenet.com . June 9, 2023 . en.
  34. Web site: Sean. Dooley. Lauren. Effron. Jenner. Smith. BTK serial killer's daughter: 'We were living our normal life. ... Then everything upended on us'. ABC News. January 22, 2019. January 30, 2021. en.
  35. Her Dad Was the BTK Killer. Their Daughter Was Gabby Petito. Why Would They Ever Agree to This? . Slate . August 14, 2024 . Winkie . Luke .
  36. News: Tim. Potter. Charlie Otero finds peace, stability nearly 40 years after BTK murders . . . Wichita, Kansas . May 11, 2013. July 1, 2018 . https://web.archive.org/web/20180701083431/https://www.kansas.com/news/special-reports/btk/article1115176.html . July 1, 2018 . live .
  37. News: August 18, 2005. BTK serial killer's victim families to address court. en-US. The New York Times. New York City. January 30, 2021. 0362-4331.
  38. News: BTK: 'I took her to the basement and...hung her'. CNN. Turner Broadcasting Systems. Atlanta, Georgia. June 27, 2005 . July 1, 2018 . https://web.archive.org/web/20180707195931/http://www.cnn.com/2005/LAW/06/27/rader.transcript/ . July 7, 2018 . live .
  39. News: Stan. Finger. Victim's family files suit against Rader. The Wichita Eagle. McClatchy. Wichita, Kansas. July 2, 2005.
  40. Web site: CROWE . ROBERT . March 2, 2005 . BTK arrest relieves victim now in Livingston . July 17, 2023 . Chron . en.
  41. Web site: CNN.com - Victim's brother describes killing linked to BTK - Mar 2, 2005 . July 17, 2023 . www.cnn.com.
  42. Web site: Survivor recalls serial killer's attack . July 17, 2023 . The Oklahoman . en-US.
  43. Web site: CNN.com - Son of BTK victim still haunted - Mar 2, 2005 . July 17, 2023 . www.cnn.com . August 29, 2023 . https://web.archive.org/web/20230829154739/https://edition.cnn.com/2005/LAW/03/01/btk.relford/index.html . dead .
  44. Web site: BTK Shares Bone-Chilling Nancy Fox Murder Details in Confession of a Serial Killer Clip . July 17, 2023 . E! News. January 7, 2022 .
  45. Web site: February 11, 2005 . KAKE BTK Back . May 1, 2024 . https://web.archive.org/web/20050211120623/http://www.kake.com/home/headlines/1251737.html . February 11, 2005 .
  46. Web site: Transcription of poem "Oh! Death to Nancy" . www.wichita.gov. City of Wichita . Wichita, Kansas. https://web.archive.org/web/20060603033530/http://www.wichitagov.org/NR/rdonlyres/909034E1-C202-4844-91E2-8231E12AFEFE/0/OhDeathtoNancy.pdf . June 3, 2006 . dead . August 9, 2011.
  47. Book: Inside the Mind of BTK: The True Story Behind the Thirty-Year Hunt for the Notorious Wichita Serial Killer . Douglas . John. John E. Douglas . Dodd . Johnny . November 3, 2008 . . Hoboken, New Jersey. 978-0-470-43768-1 . 83 . July 11, 2014 . https://web.archive.org/web/20140724151539/http://books.google.com/books?id=2TKyxh-VUqwC . July 24, 2014 . live .
  48. News: City's 'BTK Strangler' claims he's killed 7. The Wichita Eagle. McClatchy. Wichita, Kansas. Kansas.com. February 11, 1978. October 17, 2019.
  49. Web site: May 4, 2005 . 'MSNBC Reports' BTK Killer for May 3 . May 1, 2024 . NBC News . en.
  50. Web site: Stroebe . Wolfgang . May 1, 2012 . How Advertisements Manipulate Behavior . May 1, 2024 . Scientific American . en.
  51. Web site: The BTK Story – More Clues Revealed . Marilyn . Bardsley . Rachael . Bell . David . Lohr . . https://web.archive.org/web/20080529005912/http://www.trutv.com/library/crime/serial_killers/unsolved/btk/13.html . May 29, 2008 . dead . May 25, 2008.
  52. News: BTK took body to church, says investigator . . Turner Broadcasting Systems. Atlanta, Georgia . August 18, 2005 . February 20, 2019 . https://web.archive.org/web/20180802163531/http://www.cnn.com/2005/LAW/08/18/btk.killings.wed/ . August 2, 2018 . live .
  53. Book: Geberth, Vernon . Sex-Related Homicide and Death Investigation: Practical and Clinical Perspectives . CRC Press. Boca Raton. Florida. 2010. 978-1-4398-2656-0 . 628.
  54. Web site: Heather. Hollingsworth. Summer. Ballentine. August 23, 2023. Oklahoma authorities name the BTK killer as the 'prime suspect' in at least two unsolved cases . August 24, 2023. Associated Press News. en.
  55. Web site: Cynthia Dawn Kinney. August 24, 2023. The Charley Project. en.
  56. Web site: Cynthia Dawn Kinney. August 24, 2023. Oklahoma Cold Cases. en.
  57. Web site: Authorities search BTK serial killer's former property in connection with 1976 missing person case and other unsolved cases. August 23, 2023 . August 24, 2023. CNN. en.
  58. News: Killman . Curtis . Sheriff details investigation into BTK killer as suspect in Oklahoma girl's disappearance . September 10, 2023 . . September 10, 2023 . en.
  59. News: BTK Strangler resurfaces after 25 years . July 11, 2014 . . March 28, 2004 . https://web.archive.org/web/20140714151807/http://www.scotsman.com/news/world/btk-strangler-resurfaces-after-25-years-1-519136 . July 14, 2014 . live .
  60. News: 'BTK' serial killer caught . . February 27, 2005 . October 17, 2011 . https://web.archive.org/web/20120528073227/http://www.theage.com.au/news/World/BTK-serial-killer-caught/2005/02/27/1109439444107.html . May 28, 2012 . live .
  61. News: Police destroy 1,326 DNA samples taken in BTK investigation . USA Today . May 31, 2006 . May 1, 2010 . https://web.archive.org/web/20090616105137/http://www.usatoday.com/news/nation/2006-05-31-DNA-BTK_x.htm . June 16, 2009 . live .
  62. Book: Singular, Stephen . Unholy Messenger: The Life and Crimes of the BTK Serial Killer . July 11, 2014 . March 27, 2007 . . 978-1-4165-3154-8 . 115–116 . https://web.archive.org/web/20140724185808/http://books.google.com/books?id=BOtccTWu3FYC&pg=PA115 . July 24, 2014 . live .
  63. News: Potter . Tim . After 31 years and 10 deaths pieces fall in place . January 21, 2015 . . July 10, 2005 . https://web.archive.org/web/20141229201313/http://www.kansas.com/news/special-reports/btk/article1003747.html . December 29, 2014 . live .
  64. Web site: Mark. Saunokonoko. How vanity and a rogue Microsoft Word document led to the capture of evil 'BTK' serial killer. 9news.com.au. August 28, 2019. July 22, 2021.
  65. Book: Girard, James E. . Criminalistics: Forensic Science, Crime, and Terrorism . July 11, 2014 . 2013 . . Burlington, Massachusetts. 978-1-4496-9180-6 . 417 . https://web.archive.org/web/20140718025951/http://books.google.com/books?id=EXJHAgAAQBAJ&pg=PA417 . July 18, 2014 . live .
  66. Web site: The Home Depot where BTK left one of his letters. May 30, 2023.
  67. News: Mark. Hansen. How the Cops Caught BTK: Playing to a serial killer's ego helped crack the case. ABA Journal. American Bar Association. Chicago, Illinois. May 1, 2006. July 22, 2021.
  68. News: John. Sandford. Camp novel crops up in the BTK case . Star-Tribune. March 3, 2005 . johnsandford.org. June 2, 2008 . https://web.archive.org/web/20080509092637/http://www.johnsandford.org/articles050303.html . May 9, 2008 . live .
  69. Book: Girard, James E. . Criminalistics: Forensic Science, Crime, and Terrorism . January 21, 2015 . 2013 . . 978-1-4496-9180-6 . 417 . https://web.archive.org/web/20140718025951/http://books.google.com/books?id=EXJHAgAAQBAJ&pg=PA417 . July 18, 2014 . live .
  70. Web site: BTK Kansas Serial Killer – Full BTK Story. Crime Library. https://web.archive.org/web/20080615015844/http://www.trutv.com/library/crime/serial_killers/unsolved/btk/index_1.html . June 15, 2008 .
  71. News: Cops Make Arrest in BTK Probe . July 11, 2014 . Fox News. News Corp.. New York City. February 27, 2005 . https://web.archive.org/web/20140715092621/http://www.foxnews.com/story/2005/02/27/cops-make-arrest-in-btk-probe/ . July 15, 2014 . live .
  72. News: Potter . Tim . Police tell details of BTK hunt . . March 14, 2007 . June 1, 2012 . https://web.archive.org/web/20121112034643/http://www.kansas.com/2005/07/16/19136/police-tell-details-of-btk-hunt.html . November 12, 2012 . dead .
  73. News: Tim. Potter. Stan. Finger. Policeman details capture of BTK killer . Lawrence Journal-World. July 10, 2005. September 13, 2014 . https://web.archive.org/web/20131229125025/http://www2.ljworld.com/news/2005/jul/10/police_detail_capture_btk/ . December 29, 2013 . live .
  74. News: Nakashima . Ellen . From DNA of Family, a Tool to Make Arrests . January 21, 2015 . . April 21, 2008 . https://web.archive.org/web/20141204143344/http://www.washingtonpost.com/wp-dyn/content/article/2008/04/20/AR2008042002388.html . December 4, 2014 . live .
  75. Book: Valerie . Nye . Kathy . Barco . True Stories of Censorship Battles in America's Libraries . July 11, 2014 . 2012 . . 978-0-8389-1130-3 . 133 . https://web.archive.org/web/20140724011702/http://books.google.com/books?id=BihlxYtVEOkC&pg=PA133 . July 24, 2014 . live .
  76. News: Edie . Magnus . 31 years of the BTK killer . MSNBC. August 24, 2005 . October 19, 2015 . https://web.archive.org/web/20151026145742/http://www.nbcnews.com/id/8916264/page/6 . October 26, 2015 . dead .
  77. Book: Fox . James Alan . Extreme Killing: Understanding Serial and Mass Murder . Levin . Jack . March 14, 2011 . . 978-1-4129-8031-9 . Thousand Oaks, California . 11 . James Alan Fox . Jack Levin (sociologist) . July 11, 2014 . registration.
  78. News: CNN.com – Report: Daughter of BTK suspect alerted police – Apr 19, 2005 . CNN . October 19, 2015 . https://web.archive.org/web/20150924045633/http://www.cnn.com/2005/US/02/26/btk.investigation/ . September 24, 2015 . live .
  79. News: Andy . Samuelson . Wichita police: 'BTK is arrested' . . Ogden Newspapers Inc. . Lawrence, Kansas . February 27, 2005 . June 2, 2008 . https://web.archive.org/web/20080522145640/http://www2.ljworld.com/news/2005/feb/27/wichita_police_btk/ . May 22, 2008 . live .
  80. Web site: BTK Serial Killer Suspect's Charges – State of Kansas v. Dennis Rader (page 6) . February 28, 2005 . findlaw.com . June 2, 2008 . https://web.archive.org/web/20080416080223/http://news.findlaw.com/cnn/docs/btk/karader30105inf.html . April 16, 2008 . live .
  81. News: 'BTK' Serial Killer in Custody, Claims Police . March 1, 2005 . June 2, 2008 . St. Petersburg Times . dead . https://web.archive.org/web/20080409111913/http://www.sptimes.ru/index.php?action_id=2&story_id=2857 . April 9, 2008.
  82. News: BTK Suspect Said to Confess to 6 Slayings . February 27, 2005 . USA Today. . June 2, 2008 . https://web.archive.org/web/20080527212129/http://www.usatoday.com/news/nation/2005-02-27-wichita-killings_x.htm . May 27, 2008 . live .
  83. News: Stan . Finger . Tim . Potter . Rader has admitted to killings, daily says . . . Salt Lake City, Utah . March 6, 2005 . June 2, 2008 . https://web.archive.org/web/20090108181137/http://deseretnews.com/article/1,5143,600116654,00.html . January 8, 2009 . dead .
  84. News: Victim's brother describes killing linked to BTK . March 2, 2005 . . June 2, 2008 . https://web.archive.org/web/20081010053741/http://www.cnn.com/2005/LAW/03/02/btk.investigation/index.html . October 10, 2008 . live .
  85. News: Dana . Strongin . Hurst . Laviana . Families of BTK victims prepare to wait . . Wichita, Kansas . May 5, 2005 . March 20, 2018 . https://web.archive.org/web/20180321130940/http://www.kansas.com/news/special-reports/btk/article1003691.html . March 21, 2018 . live .
  86. Web site: BTK Confession, full version. YouTube. February 26, 2014 .
  87. Web site: BTK CONFESSION (DENNIS L RADER) – COURT TRANSCRIPT. Serial Killers Info. February 4, 2018 .
  88. News: Anger, Relief Over BTK Confessions . . June 28, 2005 . June 2, 2008 . https://web.archive.org/web/20080906234320/http://www.cbsnews.com/stories/2005/06/28/national/main704663.shtml . September 6, 2008 . live .
  89. News: Hansen . Mark . How the Cops Caught BTK . . . January 21, 2015 . April 21, 2006 . https://web.archive.org/web/20150121044855/http://www.abajournal.com/magazine/article/how_the_cops_caught_btk/ . January 21, 2015 . live .
  90. News: Leigh. Sales. US Serial Killer pleads guilty to ten murders . January 21, 2015 . . June 28, 2005 . https://web.archive.org/web/20150210013457/http://www.abc.net.au/worldtoday/content/2005/s1402337.htm . February 10, 2015 . live .
  91. Web site: BTK Dennis Rader's Sentencing Statement. YouTube. February 26, 2014 .
  92. Book: Gray, Richard M.. For most people, emotional words and scenes lead to heightened activity in the amygdala as the emotional sense of the situation overcomes them, often shutting down higher functions. For psychopaths, the amygdala responds less powerfully to the same items and when it does respond it does so in step with higher cortical activity. The cortex is the brain area associated with rational thought and interpretive functions. So, psychopaths presented with an emotional stimulus have to think about its meaning and rationally make sense of it in order to parse their response. They do not feel the effects of others' fear, sadness, or pain, so they have to work to interpret their environment.
    This characteristic appears clearly in the allocution of Dennis Rader, the BTK Killer. Standing in court before the judge, the victims' families, and the assembled press, Rader listened as the judge read out the details of his offenses. Without blinking an eye, Rader stopped the judge at several junctures to correct some minor detail. Unmoved by the enormity of his crimes or the responses of the people gathered there, Rader makes almost casual responses to the facts in the case; at one point making mouth noises as he sought a precise fact. This is a man who cannot even begin to appreciate the impact he had on others.. 2010. Psychopathy and the Will to Power: Ted Bundy and Dennis Rader. Sara. Waller. Serial Killers – Philosophy for Everyone: Being and Killing. Oxford, England. Blackwell Publishing. 978-1-4443-4140-9. 198–99.
  93. News: Sam . Coates . Rader Gets 175 Years For BTK Slayings . . August 19, 2005 . February 20, 2009 . https://web.archive.org/web/20141024104531/http://www.washingtonpost.com/wp-dyn/content/article/2005/08/18/AR2005081800201.html . October 24, 2014 . live .
  94. News: BTK killer sentenced to 10 consecutive life terms . August 19, 2005 . WHO-TV (AP) . August 7, 2007 . dead . https://web.archive.org/web/20070809084420/http://www.whotv.com/Global/story.asp?s=8945 . August 9, 2007.
  95. Web site: Dennis Rader's listing on the Kansas Department of Corrections Kansas Adult Supervised Population Electronic Repository site . June 2, 2008 . dead . https://web.archive.org/web/20071125191551/http://www.dc.state.ks.us/kasper/offenders?lastname=rader&firstname=dennis&middlename=lynn . November 25, 2007.
  96. News: Lloyd . Vries . BTK Killer Gets Extra Jail Perks . . April 24, 2006 . March 20, 2018 . https://web.archive.org/web/20121025232613/http://www.cbsnews.com/stories/2006/04/24/national/main1535408.shtml . October 25, 2012 . live .
  97. Ramsland, pp. 217–218.
  98. News: BTK Psychologist to Pay State . . WIBW . May 10, 2007 . February 10, 2015 . https://web.archive.org/web/20150211065249/http://www.wibw.com/home/headlines/7446541.html . February 11, 2015 . live .
  99. Book: Dangelo, Adrian . November 12, 2014 . Robert Beattie Nightmare in Wichita: The Hunt for the BTK Strangler . 47 . January 19, 2019.
  100. Web site: Living victim sues Rader . The Witchita Eagle . October 28, 2022 . August 19, 2019.
  101. Web site: Hayden . Aly Vander . Everything You Need To Know About BTK, The Disturbing Killer Shown In 'Mindhunter' . Oxygen Official Site . August 20, 2019 . October 28, 2022.
  102. Ramsland, pg. 1
  103. News: Roy . Wenzl . Daughter of Wichita serial killer BTK; Stephen King 'exploiting my father's 10 victims' . . September 26, 2014 . March 17, 2015 . https://web.archive.org/web/20150317065442/http://www.kansascity.com/news/state/kansas/article2254570.html . March 17, 2015 . live .
  104. Book: Beattie . Robert . Nightmare in Wichita . 2005 . . New York City . 0-451-21738-1 . registration .
  105. Web site: Ahead of the Season 22 Premiere, We Ranked the 30 Best Law & Order: SVU Episodes Ever. November 12, 2020.
  106. Book: Ramsland, Katherine. Katherine Ramsland. The Forensic Psychology of Criminal Minds. Penguin Publishing. New York City. 2010. B0030CHFQC. 36.
  107. Marilyn. La Jeunesse, Marilyn. 11 episodes of 'Criminal Minds' that were likely inspired by real-life crimes. Business Insider. March 1, 2019. December 8, 2019. December 8, 2019. https://web.archive.org/web/20191208082151/https://www.businessinsider.my/criminal-minds-episodes-real-life-crimes-2019-2/. dead.
  108. Web site: Catching Killers. IMDb. February 9, 2022.
  109. News: Amy Renée . Leiker . That creepy ADT guy on 'Mindhunter'? He's based on a Kansas serial killer . . October 16, 2017 . October 26, 2017 . https://web.archive.org/web/20171027024616/http://www.kansas.com/news/special-reports/btk/article179181456.html . October 27, 2017 . live .
  110. News: Joanna . Robinson . Mindhunter: Who is the ADT Killer from Kansas? . . October 17, 2017 . October 23, 2017 . https://web.archive.org/web/20171019025914/https://www.vanityfair.com/hollywood/2017/10/mindhunter-who-is-adt-killer-kansas-dennis-rader-season-2-wichita-park-city . October 19, 2017 . live .
  111. Web site: B.T.K. Killer. IMDb. October 14, 2023.
  112. Web site: B.T.K.. IMDb. July 8, 2008.
  113. News: Is The Clovehitch Killer Based On The BTK Murders True Story?. May 10, 2021. ScreenRant. November 11, 2021.
  114. Web site: Lyrics for BTK by Exodus . Songfacts . February 13, 2022.
  115. http://www.unsungmelody.com/concert-reviews/the-raven-that-refused-to-sing-steven-wilson-at-park-west-theater-in-chicago/ The Raven that Refused to Sing – Concert Review