M (1931 movie)

M (— "M – A City Searches for a Murderer") is a 1931 German drama-thriller movie. It was directed by Fritz Lang, and it starred Peter Lorre. The film was written by Lang and his wife Thea von Harbou. It was the director's first sound film.
The film focuses on the actions of a serial killer of children and the manhunt for him. The police and the criminal underworld do the manhunt. Now considered a classic, the film was deemed by Lang to be his magnum opus.
Release.
"M" was shown in Berlin on 11 May 1931 at the UFA-Palast am Zoo in a version that was 117 minutes long.
The film later was released in the U.S. in April 1933 by Foremco Pictures.