Trailer
Images
 | Pamela Franklin as Florence Tanner |
 | Roddy McDowall as Benjamin Franklin Fischer |
 | Clive Revill as Dr. Lionel Barrett |
 | Gayle Hunnicutt as Ann Barrett |
 | Roland Culver as Mr. Rudolph Deutsch |
 | Peter Bowles as Hanley |
 | Michael Gough as Emeric Belasco (uncredited) |
| Directing | |
| John Hough | Director |
Production | |
| Albert Fennell | Producer |
| Norman T. Herman | Producer |
| James H. Nicholson | Executive Producer |
Writing | |
| Richard Matheson | Novel |
| Richard Matheson | Screenplay |
Production | |
| Susan Hart | Executive Producer |
| Sally Nicholl | Casting |
Camera | |
| Alan Hume | Director of Photography |
Editing | |
| Geoffrey Foot | Editor |
Costume & Make-Up | |
| Linda DeVetta | Makeup Artist |
Sound | |
| Delia Derbyshire | Original Music Composer |
| Brian Hodgson | Original Music Composer |
| Dudley Simpson | Original Music Composer |
Art | |
| Robert Jones | Art Direction |
Costume & Make-Up | |
| Pat McDermott | Hairstylist |
Production | |
| Ron Fry | Production Manager |
Directing | |
| Gladys Goldsmith | Continuity |
Visual Effects | |
| Tom Howard | Visual Effects |
Art | |
| Robert Jones | Set Designer |
| Kenneth McCallum Tait | Assistant Art Director |
Crew | |
| Roy Whybrow | Special Effects |
Costume & Make-Up | |
| Eileen Sullivan | Wardrobe Master |
Sound | |
| Peter Lennard | Sound Editor |
Directing | |
| Bert Batt | Assistant Director |
Camera | |
| Tony White | Camera Operator |
Sound | |
| Bill Rowe | Sound Recordist |
| Les Hammond | Sound Recordist |
| Peter Lennard | ADR Editor |
| Delia Derbyshire | Sound Effects |
| Brian Hodgson | Sound Effects |
| John Potter | Boom Operator |
