M

1931 · 117 min · dir. Fritz Lang

M is a 1931 German mystery thriller film directed by Fritz Lang and starring Peter Lorre as Hans Beckert, a serial killer who targets children, in his third screen role. Both Lang's first sound film and an early example of a procedural drama, M centres on the efforts of both a city's police force and its criminal syndicates to apprehend a serial child-murderer. Synopsis from Wikipedia, CC BY-SA.