M (1931 film)

1931 film by 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. The film's screenplay was written by Lang and his wife Thea von Harbou.

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