Killer by Night

The Night Stalker is an American made-for-television horror film which aired on ABC on January 11, 1972, as their ABC Movie of the Week. In the film, Carl Kolchak (Darren McGavin), an investigative reporter, comes to suspect that a serial killer in the Las Vegas area is actually a vampire. The Night Stalker set a record for the most viewed made-for-TV film. It was followed by a sequel, The Night Strangler, and a television series, Kolchak: The Night Stalker, both of which had McGavin reprise his role as Carl Kolchak.