Johnny O’Clock 1947

New York gambling house operator Johnny O’Clock is junior partner in a posh casino with Guido Marchettis and Chuck Blayden, a crooked cop. But Blayden is trying to cut into the casino’s profits and warns Johnny not to interfere with his intention of becoming Marchettis’ full partner. Blayden ends his relationship with coat check girl Harriet Hobson, then disappears. Later, Harriet is found dead in her apartment, apparently from suicide. Police Inspector Koch begins an investigation.He questions Johnny, Harriet’s sister Nancy, who is infatuated with Johnny, and Johnny’s associate, Charlie….. IMDB