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Eva Marie Saint as Echo O'Brien |
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Warren Beatty as Berry-Berry Willart |
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Karl Malden as Ralph Willart |
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Angela Lansbury as Annabell Willart |
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Brandon De Wilde as Clinton Willart |
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Constance Ford as Mrs. Mandel |
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Barbara Baxley as School Teacher |
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Evans Evans as Hedy |
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Madame Spivy as Bouncer |
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Albert Paulsen as Capt. Ramirez |
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Robert Sorrells as Waiter in Sweet Shop |
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Carol Kelly as Flame |
| Writing | William Inge | Screenplay |
| Directing | John Frankenheimer | Director |
| Costume & Make-Up | Dorothy Jeakins | Costume Design |
| Sound | Alex North | Original Music Composer |
| Camera | Lionel Lindon | Director of Photography |
| Writing | James Leo Herlihy | Novel |
| Editing | Fredric Steinkamp | Editor |
| Production | Ethel Winant | Associate Producer |
| Costume & Make-Up | William Tuttle | Makeup Artist |
| Art | George W. Davis | Art Direction |
| Art | George R. Nelson | Set Decoration |
| Production | John Houseman | Producer |
| Sound | Franklin Milton | Recording Supervision |
| Visual Effects | Robert R. Hoag | Visual Effects |
| Directing | Hal W. Polaire | Assistant Director |
| Costume & Make-Up | Sydney Guilaroff | Hairstylist |
| Art | Henry Grace | Set Decoration |
| Art | E. Preston Ames | Art Direction |
