| Directed by |
Gordon Hessler |
|
| Screenplay by |
Christopher Wicking |
|
| Cast: | ||
| Dr. Browning | Vincent Price | |
| Fremont | Christopher Lee | |
| Major Heinrich Benedek | Peter Cushing | |
| Detective Supt. Bellaver | Alfred Marks | |
| Keith | Michael Gothard | |
| Director of photography |
John Coquillon |
|
| Produced by |
Milton Subotsky Max Rosenberg |
|
| Executive Producer |
Louis M. Heyward |
|
| Year: | 1970 | |
| Running time: | 95 minutes | |
| Country: | United Kingdom | |
| Language: | English | |