| Runtime: | 30 minutes |
| Creator: | Carmen Armendáriz |
| Country: | Mexico |
La hora marcada is a 1988 Mexican television anthology series presenting horror and science fiction in the vein of The Twilight Zone, originally aired from 1988 to 1990 by Canal de las Estrellas, with half-hour episodes, and re-broadcast from 1997 to 1999 at various times by Channel 9 (Mexico) and local Televisa channels. Although virtually unknown outside Mexico, it achieved a popular and critical success in that region. The series was the first opportunity for many Mexican filmmakers to venture into the genre of horror, and its rotating cast of writers and directors included Emmanuel Lubezki, Guillermo del Toro and Alfonso Cuarón.
The "Woman in Black" (La Dama De Negro), who typically makes cameo appearances wearing a long dress and a black veil in the background near the middle or end of many episodes, and sometimes plays a more active role in the episode, is a personification of Death. She was played by several actresses; among the most frequent: Frances Ondiviela, Margot Buzali, and Tere Hernandez.
In the 2007 spin-off series 13 Miedos ("Thirteen Fears"), this character is replaced by a similar character played by Constantino Morán, as a male narrator or horror host with black eyes without pupils, dressed in black, and portrayed as the devil.
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