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Cliff Robertson as Charlie Gordon |
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Claire Bloom as Alice Kinian |
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Lilia Skala as Dr. Anna Straus |
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Leon Janney as Dr. Richard Nemur |
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Ruth White as Mrs. Apple |
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Dick Van Patten as Bert |
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Edward McNally as Gimpy |
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Barney Martin as Hank |
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William Dwyer as Joey |
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Dan Morgan as Paddy |
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Marianna Case as Young Woman (uncredited) |
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Leon Collins as Tap Dancer (uncredited) |
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Harry Cooper as Conference Attendee (uncredited) |
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Frank Dolan as Eddie (uncredited) |
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Randee Lynne Jensen as Woman (uncredited) |
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Ralph Nelson as Convention Speaker (uncredited) |
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Donald Warnock as Conference Attendee (uncredited) |
| Art | John DeCuir | Production Design |
| Art | Charles Rosen | Art Direction |
| Crew | Rod Stephens | Post Production Assistant |
| Costume & Make-Up | Vin Kehoe | Makeup Artist |
| Costume & Make-Up | Phil Naso | Hairstylist |
| Crew | Shelley Bartolini | Scenic Artist |
| Camera | Jack Brown | Assistant Camera |
| Art | Richard Kuhn | Title Designer |
| Production | Tom Walker Jr. | Production Supervisor |
| Costume & Make-Up | Hazel Roy | Costume Design |
| Sound | Clem Portman | Recording Supervision |
| Production | Henry Spitz | Production Manager |
| Sound | Jim Shields | Sound Recordist |
| Writing | Stirling Silliphant | Screenplay |
| Directing | Ralph Nelson | Director |
| Writing | დენიელ კიზი | Novel |
| Camera | Arthur J. Ornitz | Director of Photography |
| Production | Ralph Nelson | Producer |
| Editing | Fredric Steinkamp | Editor |
| Production | Selig J. Seligman | Executive Producer |
| Sound | Ravi Shankar | Original Music Composer |
