Trailer
Images
 | Jennifer Hillary as Penny Bowers |
 | Anthony Ainley as Bowers-One |
| Bernard Brown as Bowers-Two |
 | Gerald Sim as Det. Sgt. Greene |
 | Derek Benfield as Dr. Liam Moore |
 | David Morrell as Sam Sheppard |
 | Margaret Anderson as Sheila Sherwood |
| Alan Downer as John Sherwood |
| Pamela Craig as Miss Pringle |
| Writing | |
| Moris Farhi | Writer |
Directing | |
| Eric Hills | Director |
Production | |
| Alan Bromly | Producer |
Sound | |
| John Baker | Original Music Composer |
Writing | |
| Roger Parkes | Script Editor |
Editing | |
| Dan Rae | Editor |
Sound | |
| Roger Roger | Theme Song Performance |
Art | |
| Sally Hulke | Production Design |
Costume & Make-Up | |
| Elizabeth Saville | Makeup Artist |
Sound | |
| John Staple | Sound |
