Clap, You're Dead (1974)

Horror
Thriller

A crew that is filming a horror movie is stalked by a mysterious killer who slays three of the beautiful young actresses. There is a main suspect (a crew member that got fired shortly before the first murder occurs, after he had an argument with the first victim), a police inspector that doesn't search for possible other suspects and a dose of sleazy sex

Cast

Inspector Menzel
Richard Hanson
Sergeant Bert Malden
Mary (uncredited)

Crew

Director of Photography
Costume Design
Makeup Artist
Production Manager
Production Secretary
Assistant Director
Camera Operator
Camera Operator
Script Supervisor