 | Grant Williams als Scott Carey |
 | Randy Stuart als Louise Carey |
 | April Kent als Clarice |
 | Paul Langton als Charlie Carey |
 | Raymond Bailey als Doctor Thomas Silver |
 | William Schallert als Doctor Arthur Bramson |
 | Frank J. Scannell als Barker |
 | Helene Marshall als Nurse |
 | Diana Darrin als Nurse |
 | Billy Curtis als Midget |
| Charles Perry als Spieler (uncredited) |
 | Orangey als Butch (uncredited) |
| Jack Arnold | Director |
| Albert Zugsmith | Producer |
| Richard Matheson | Novel |
| Richard Matheson | Screenplay |
| Richard Alan Simmons | Screenplay |
| Ellis W. Carter | Director of Photography |
| Jay A. Morley Jr. | Costume Design |
| Albrecht Joseph | Editor |
| Robert Clatworthy | Art Direction |
| Alexander Golitzen | Art Direction |
| Russell A. Gausman | Set Decoration |
| Ruby R. Levitt | Set Decoration |
| Joseph Gershenson | Music Supervisor |
| Joan St. Oegger | Hairstylist |
| Bud Westmore | Makeup Artist |
| Dorothy Hughes | Script Supervisor |
| Leslie I. Carey | Sound |
| Robert Pritchard | Sound |
| William Holland | Assistant Director |
| Everett H. Broussard | Visual Effects |
| Ray Anthony | Musician |
| Tom Ouellette | Gaffer |
| Robert Pierce | Assistant Camera |
| Rydo Loshak | Costume Design |
| Rydo Loshak | Wardrobe Master |
| Henry Janssen | Cableman |
| Roswell A. Hoffmann | Visual Effects |
| Clifford Stine | Visual Effects |
| Irving Gertz | Music |
| Earl E. Lawrence | Music |
| Hans J. Salter | Music |
| Herman Stein | Music |
| Jack Kevan | Makeup Artist |
| Bob Hirsch | Sound Editor |
| George Ohanian | Sound Editor |
