Directed by
| Terence Fisher | ||
Writing Credits (in alphabetical order)
| Richard H. Landau | ... | (screenplay) |
| Charles Eric Maine | ... | (radio play) |
| Paul Tabori | ... | (freely adapted by) |
| Paul Tabori | ... | (screenplay) |
Cast (in credits order)
| Howard Duff | ... | Dr. Stephen Mitchell | |
| Eva Bartok | ... | Dr. Lisa Frank | |
| Alan Wheatley | ... | Dr. Smith | |
| Philip Leaver | ... | Professor Koepler | |
| Michael Medwin | ... | Dr. Toby Andrews | |
 |
Andrew Osborn | ... | Dr. Philip Crenshaw |
|
|
Cecile Chevreau | ... | Vanessa Mitchell |
| Anthony Ireland | ... | General Hayes | |
| Hugh Moxey | ... | Col. Alfred Daniels | |
| David Horne | ... | Minister | |
| Rest of cast listed alphabetically: | |||
|
|
Leo Phillips | ... | Sergeant Peterson (uncredited) |
| Marianne Stone | ... | Mrs. Rogers (uncredited) | |
|
|
Jean Webster-Brough | ... | Mrs. Daniels (uncredited) |
Produced by
| Michael Carreras | ... | producer |
Music by
| Ivor Slaney | ||
Cinematography by
| Reginald H. Wyer | ... | (as Reginald Wyer) |
Editing by
| Maurice Rootes | ||
Art Direction by
| J. Elder Wills | ||
Makeup Department
| Dick Bonnor-Morris | ... | makeup artist |
| Polly Young | ... | hair stylist |
Production Management
| Victor Wark | ... | production manager |
Second Unit Director or Assistant Director
| Jimmy Sangster | ... | assistant director |
| Vernon Nolf | ... | third assistant director (uncredited) |
Sound Department
| Bill Salter | ... | sound recordist |
| Percy Britten | ... | boom operator (uncredited) |
Visual Effects by
| Les Bowie | ... | process shots (uncredited) |
| Vic Margutti | ... | process shots (uncredited) |
Camera and Electrical Department
| Len Harris | ... | camera operator |
| Tom Friswell | ... | clapper loader (uncredited) |
Music Department
| Ivor Slaney | ... | musical director |
Script and Continuity Department
| Renée Glynne | ... | continuity |
Additional Crew
| Robert L. Lippert | ... | presenter |
| Nora Roberts | ... | dialogue director |
