Johnny O'Clock is an American crime film noir written and directed by Robert Rossen, based on a story by Milton Holmes. The drama features Dick Powell, Evelyn Keyes, and Lee J. Cobb. Harriet Hobson , a hat-check girl at an illegal gambling casino, apparently commits suicide using gas. Her sister Nancy shows up and becomes attracted to Johnny O'Clock , a junior partner in the gambling den. They eventually learn from Police Inspector Koch that Harriet was killed by poison. Harriet was dating Chuck Blayden , a crooked cop who is trying to persuade Johnny's longtime partner, Guido Marchettis ,... to let him take Johnny's place. When Blayden also turns up dead, Koch suspects that either Johnny or Marchettis is responsible. Though Johnny tries to resist, little by little, he falls for Nancy. Meanwhile, Marchettis's wife Nelle is still in love with her former boyfriend, Johnny. When Marchettis finds out, he tries to have his rival killed, but Johnny survives. Johnny decides to leave town with Nancy, but not before cashing in his share of the casino.
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| Release date: | January 23, 1947 |
| Directed by: | Robert Rossen |
| Runtime: | 85 Minutes |
| Producer: | Edward G. Nealis |
| Music by: | Columbia Pictures |
| Cinematography: | Burnett Guffey |
| Screenplay by: | Milton Holmes, Robert Rossen |
| Genre: | Thriller |