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