Directed by
| Barry Shawzin | ||
Writing Credits (in alphabetical order)
| Fredric Brown | ... | (original story) |
| Bob Kesten | ... | (script) |
| Barry Shawzin | ... | (script) |
Cast (in credits order)
| Roger Delgado | ... | Dr. Niemand | |
 |
Terence Knapp | ... | Harry Niemand |
|
|
John Stevenson Lang | ... | Adam Martin |
Produced by
| Barry Shawzin | ... | producer |
Music by
| Desmond Leslie | ||
Cinematography by
| Karl Maslin | ... | (photography) |
Editing by
| Peter Austen-Hunt | ||
