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Anthony Perkins as Allan |
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Julie Harris as Katherine |
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Joan Hackett as Olive |
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Kent Smith as Raymond |
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Robert H. Harris as Dr. Ellins |
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Molly Dodd as Inmate |
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Billy Bowles as Harold Dennis |
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Bill Erwin as Dr. Ames |
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Jeannette Howe as Katherine - Child |
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Kenneth Lawrence as Allan - Child |
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Trent Dolan as Eric |
| Directing | Curtis Harrington | Director |
| Writing | Henry Farrell | Novel |
| Writing | Henry Farrell | Teleplay |
| Production | George Edwards | Producer |
| Production | Aaron Spelling | Executive Producer |
| Sound | Laurence Rosenthal | Original Music Composer |
| Camera | Fleet Southcott | Director of Photography |
| Editing | Richard W. Farrell | Editor |
| Art | Tracy Bousman | Art Direction |
| Art | Ken Swartz | Set Decoration |
| Costume & Make-Up | Robert Harris Sr. | Costume Design |
| Costume & Make-Up | Jerrie Woods | Costume Design |
| Costume & Make-Up | Ted Coodley | Makeup Artist |
| Production | Norman Henry | Executive In Charge Of Production |
| Production | Jim Lane | Production Manager |
| Crew | Joe Lombardi | Special Effects |
