"M" by Fritz Lang (1931 masterpiece pre-dating film noir)

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(117min)'M' is the story of a child murderer, loose in 1930's Berlin. Police are at a loss to find the serial killer; the criminal underground mounts an effort in order to distance themselves from the monster. A defining movie in early cinema, director Fritz Lang's first 'sound film' creeps through the shadowy world of film noir, long before such a genre existed, to portray the histeria in which a fearful society operates.