A crazed killer escapes from an asylum and assumes the identity of his twin brother, a famous and respected architect.
| Directing | John Scholz-Conway | Director |
| Writing | Brian Clemens | Writer |
| Sound | Laurie Johnson | Music |
| Production | John Cooper | Producer |
| Editing | Carole Legg | Editor |
| Editing | Al Pigden | Editor |
| Editing | Tom Rowland | Editor |
| Editing | John Willment | Editor |
| Art | Stanley Mills | Production Design |
| Camera | Brian Grant | Camera Operator |
| Camera | Tony Mander | Camera Operator |
| Camera | Mike Whitcutt | Camera Operator |
| Sound | Paul B. Clay | Music Coordinator |
