The Night Stalker (1972 film)

''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. Provided by Wikipedia