Kansas City Confidential is a 1952 American independently-made film noir and crime film directed by Phil Karlson starring John Payne and Coleen Gray. The film was released in the United Kingdom as The Secret Four. Karlson and Payne teamed a year later for 99 River Street, another film noir, followed by Hell's Island, a film noir in color.
The plot served as inspiration for Quentin Tarantino's Reservoir Dogs.
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