 | John P. Ryan als Frank Davis |
 | Sharon Farrell als Lenore Davis |
 | Andrew Duggan als The Professor |
 | Guy Stockwell als Bob Clayton |
 | Michael Ansara als The Captain |
 | William Wellman Jr. als Charley |
 | Robert Emhardt als The Executive |
 | James Dixon als Lieutenant Perkins |
| Shamus Locke als The Doctor |
| Patrick McAllister als Expectant Father |
| Larry Cohen | Director |
| Larry Cohen | Producer |
| Larry Cohen | Writer |
| Bernard Herrmann | Original Music Composer |
| Peter Honess | Editor |
| Rick Baker | Makeup Artist |
| Gary Leonard | Still Photographer |
| Jeffrey L. Kimball | Second Unit Director of Photography |
| John Dorr | Script Supervisor |
| Bob Cohen | Production Assistant |
| Steve Salkin | Production Consultant |
| Pat Somerset | Sound Effects |
| Bob Biggart | Special Effects |
| Robert Isenberg | Assistant Camera |
| Bob Biggart | Production Design |
| Reid Freeman | Production Assistant |
| Pat Somerset | Special Effects |
| Pat Somerset | Production Design |
| Fenton Hamilton | Director of Photography |
| Janelle Webb | Co-Producer |
| Bob Biggart | Sound Effects |
| Bernard Herrmann | Orchestrator |
| Rick Baker | Special Effects Makeup Artist |
| Bill Williams | Gaffer |
| Peter Sabiston | Executive Producer |
| Bernard Herrmann | Conductor |
