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The Killer That Stalked New York is a 1950 American film noir directed by Earl McEvoy and starring Evelyn Keyes, Charles Korvin and William Bishop. The film, shot on location and in a semi-documentary style, is about diamond smugglers who unknowingly start a smallpox outbreak in the New York City of 1947. It is based on the real threat of a smallpox epidemic in the city, as described in a story taken from a 1948 Cosmopolitan magazine article.