Directed by
| Peter Graham Scott | ||
Writing Credits (in alphabetical order)
| Brian Clemens | ... | (writer) |
| N.J. Crisp | ... | (creator) |
| Gerard Glaister | ... | (creator) |
Cast (in credits order)
| Marius Goring | ... | Prof. John Hardy | |
| Rest of cast listed alphabetically: | |||
| Tim Barlow | ... | Inspector Wisley | |
| Edward de Souza | ... | Giles Marston | |
| Bill Dean | ... | Leslie Stevens | |
| John Forgeham | ... | Warder | |
 |
Nancie Jackson | ... | Maggie Wisley |
|
|
Michael Mulloy | ... | Student |
| Jeremy Sinden | ... | Price | |
|
|
Virginia Stride | ... | Susan Bartlett |
| Michael Troughton | ... | Myers | |
| William Wilde | ... | Freddie Paxton | |
| John Woodnutt | ... | Turner | |
Produced by
| Andrew Osborn | ... | producer |
Production Design by
| Ray London | ||
Makeup Department
| Ann Briggs | ... | makeup |
Production Management
| Sheelagh Rees | ... | production unit manager |
Sound Department
| John Hartshorn | ... | sound |
Camera and Electrical Department
| Keith Hopper | ... | film cameraman |
| Ken Westbury | ... | film cameraman |
| Peter Winn | ... | lighting |
Costume and Wardrobe Department
| Bobi Bartlett | ... | costumes |
Additional Crew
| Marilyn Gold | ... | production assistant |
| Bernard Knight | ... | technical adviser |