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.