Directed by
| David Greene | ... | (directed by) |
Writing Credits
| D.B. Ledrov | ... | (screenplay by) and |
| Nat Tanchuck | ... | (screenplay by) (as Nathaniel Tanchuck) |
| August Derleth | ... | (from the book by) and |
| H.P. Lovecraft | ... | (from the book by) |
Cast (in credits order)
| Gig Young | ... | Mike Kelton | |
| Carol Lynley | ... | Susannah Whately Kelton / Sarah | |
| Oliver Reed | ... | Ethan | |
| Flora Robson | ... | Aunt Agatha | |
| Judith Arthy | ... | Emma | |
 |
Rick Jones | ... | Luther Whately |
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Ann Bell | ... | Mary Whately, Susannah's Mother |
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William Devlin | ... | Zebulon Whately |
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Charles Lloyd Pack | ... | Barge Master |
| Bernard Kay | ... | Tait | |
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Celia Hewitt | ... | Aunt Sarah |
| Robert Cawdron | ... | John Whately, Susannah's Father | |
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Murray Evans | ... | Gang Member |
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Cliff Diggins | ... | Gang Member (as Clifford Diggins) |
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Peter Porteous | ... | Gang Member |
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Anita Anderson | ... | Susannah as a Child |
| Rest of cast listed alphabetically: | |||
| Donald Sutherland | ... | Zebulon (voice) | |
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Ingrid Bower | ... | Village Girl (uncredited) |
Produced by
| Phillip Hazleton | ... | producer (as Phillip Hazelton) |
| Alexander Jacobs | ... | associate producer |
| Bernard Schwartz | ... | executive producer |
Music by
| Basil Kirchin | ||
| Jack Nathan | ... | (uncredited) |
Cinematography by
| Ken Hodges | ... | (as Kenneth Hodges) |
Editing by
| Brian Smedley-Aston | ||
Casting By
| Frederick Yale | ||
Art Direction by
| Brian Eatwell | ||
Costume Design by
| Caroline Mott | ||
Makeup Department
| Harry Frampton | ... | makeup artist |
| Eileen Warwick | ... | hairdresser |
Production Management
| David C. Anderson | ... | production manager (as David Anderson) |
Second Unit Director or Assistant Director
| Stuart Freeman | ... | assistant director |
| Alex Carver-Hill | ... | second assistant director (uncredited) |
Art Department
| Maurice Smith | ... | construction coordinator |
| Mark James | ... | assistant art director (uncredited) |
Sound Department
| Don Challis | ... | sound editor |
| Gerry Humphreys | ... | sound recordist (as G. Humphreys) |
| Kenneth Osbourne | ... | sound mixer (as Kenneth Osborne) |
| Robin O'Donoghue | ... | assistant sound recordist (uncredited) |
| Mike Silverlock | ... | sound camera operator (uncredited) |
| Kevin Sutton | ... | sound mixer (uncredited) |
| Peter Watson | ... | assistant sound editor (uncredited) |
Camera and Electrical Department
| Herbert Smith | ... | camera operator |
Costume and Wardrobe Department
| Hylan Booker | ... | costume designer: Carol Lynley |
| Brenda Dabbs | ... | wardrobe mistress (uncredited) |
Editorial Department
| Pepita Fairfax | ... | assistant editor |
Music Department
| Chris Karan | ... | musician: drums |
| Basil Kirchin | ... | music arranger |
| Peter McGuirk | ... | musician: bass (as Peter McGurk) |
| Jack Nathan | ... | music director |
Script and Continuity Department
| Ann Skinner | ... | continuity |
Additional Crew
| Derek Nice | ... | title designer |
| Tony Tweedale | ... | unit publicist (uncredited) |
