The Mind of Mr. J. G. Reeder explained

The Mind of Mr. J. G. Reeder is a collection of short stories by the English crime writer Edgar Wallace, published in 1925.^[1]

The stories, which concern a former police officer working for the Director of Public Prosecutions, are:

"Sheer Melodrama" (also published as "The Man from the East")
"The Green Mamba" (also published as "The Dangerous Reptile")
"The Investors"
"The Poetical Policeman" (also published as "The Strange Case of the Night Watchman" or "The Poet Policeman")
"The Stealer of Marble"
"The Strange Case" (also published as "The Weak Spot")
"The Treasure Hunt"
"The Troupe" (also published as "A Place on the River")

In the United States the book was titled The Murder Book of Mr. J. G. Reeder and the stories were presented in a different order:

Adaptations

The stories (and other books and stories by Wallace in which Reeder appears) have been adapted for film, television and radio, as follows:

Mr. Reeder in Room 13, film, 1938^[2] starring Gibb McLaughlin, based on Wallace's novel Room 13
The Mind of Mr. Reeder, film, 1939^[3] ^[4] starring Will Fyffe
The Missing People, film, 1940 starring Will Fyffe, based on another novel by Wallace
The Mind of Mr. J.G. Reeder, television, 1969-1971^[5] starring Hugh Burden
The Mind of Mr. J. G. Reeder, radio^[6]

Note: Current practice in UK English is to omit the full stop after "Mr", but Wallace and his publishers included it.
. Retrieved on 30 October 2007
. Retrieved on 30 October 2007
News: New York Times. https://web.archive.org/web/20110519182328/http://movies.nytimes.com/movie/103475/The-Mysterious-Mr-Reeder/overview. dead. 2011-05-19. Movies & TV Dept.. Baseline & All Movie Guide. Hal Erickson. Hal Erickson (author). 2011. 2007-10-30 .
. Retrieved on 30 October 2007
News: Radio review: Elisabeth Mahoney on The Mind of Mr JG Reeder on BBC7. The Guardian. 30 October 2007 . London . 30 October 2007.