Directed by
| Sidney Hayers | ||
Writing Credits
| Philip Levene | ... | (story) |
| Philip Levene | ... | (screenplay) |
Cast (in credits order)
| Chad Everett | ... | Quentin Barnaby | |
| Anjanette Comer | ... | Toby Collins | |
| Keith Barron | ... | Jim Maxwell | |
 |
Joanne Dainton | ... | Valerie Chrane |
| Rupert Davies | ... | Prentice | |
| Robert Flemyng | ... | Carlson | |
| Roy Kinnear | ... | Roscoe | |
| John Loder | ... | Routledge | |
| Allan Cuthbertson | ... | Jarvis | |
| James Hayter | ... | Inspector Herman | |
| Joseph Brady | ... | Watchman | |
| Marianne Stone | ... | Edwards (The Confessor) | |
| Rest of cast listed alphabetically: | |||
|
|
Pauline Peart | ... | (uncredited) |
|
|
Donald Webster | ... | Peters (uncredited) |
Produced by
| Barry Delmaine | ... | associate producer |
| Philip Levene | ... | associate producer |
| Julian Wintle | ... | producer |
Music by
| Laurie Johnson | ||
Cinematography by
| Alan Hume | ... | director of photography |
Editing by
| Lionel Selwyn | ||
Production Design by
| Harry Pottle | ||
Makeup Department
| Daphne Martin | ... | hairdresser |
| Stella Morris | ... | makeup artist |
Production Management
| Ray Frift | ... | production manager |
Second Unit Director or Assistant Director
| Gino Marotta | ... | assistant director |
| Howard Gaard | ... | second assistant director (uncredited) |
Art Department
| Denise Exshaw | ... | set dresser |
| George Hill | ... | construction manager |
| Jack Cook | ... | scenic artist (uncredited) |
| Michael Lamont | ... | assistant art director (uncredited) |
| Peter Lamont | ... | draughtsman (uncredited) |
Sound Department
| Brian Blamey | ... | sound editor |
| Ted Karnon | ... | dubbing mixer |
| Robert T. MacPhee | ... | sound recordist (as Robert McPhee) |
| Ted Karnon | ... | sound re-recordist (uncredited) |
| Charlie McFadden | ... | boom operator (uncredited) |
| Victor Nunes | ... | assistant sound editor (uncredited) |
| Austin Partridge | ... | sound maintenance (uncredited) |
| Laurie Reed | ... | sound camera operator (uncredited) |
Special Effects by
| Cliff Culley | ... | special effects |
| John Richardson | ... | special effects (uncredited) |
Camera and Electrical Department
| Derek V. Browne | ... | camera operator (as Derek Browne) |
| Gerry Altman | ... | clapper loader (uncredited) |
| Mike Frift | ... | focus puller: second unit (uncredited) |
| Jack Lowin | ... | second unit cameraman (uncredited) |
| Douglas Luke | ... | still photographer (uncredited) |
| Douglas F. O'Neons | ... | focus puller (uncredited) |
Costume and Wardrobe Department
| Jean Fairlie | ... | wardrobe |
| Masada Wilmot | ... | wardrobe |
Editorial Department
| Michael Crowley | ... | first assistant editor (uncredited) |
| Terence James | ... | second assistant editor (uncredited) |
Location Management
| Arnold Ross | ... | location manager |
Script and Continuity Department
| Marjorie Lavelly | ... | continuity |
Additional Crew
| June Gordon | ... | production secretary (uncredited) |
