Remake of the 1931 Fritz Lang original. In the city, someone is murdering children. The Police search is so intense, it is disturbing the 'normal' criminals, and the local hoods decide to help find the murderer as quickly as possible.
Direction
Losey's shadow-drenched LA locations reimagine German expressionism
Acting
David Wayne's whistling psychopath — charming until it chills

Director
Joseph Losey
Trivia, insights & behind the scenes
Losey was blacklisted shortly after; this was his last Hollywood film before exile to Europe.
The 'M' motif — Martin, murder, mob, morality — Losey makes it American where Lang made it Weimar.