| Person | Type | Job | Role(s) |
|---|---|---|---|
 Alexander Jacobs | Crew | Production | Associate Producer |
Basil Kirchin | Crew | Sound | Original Music Composer |
Bernard Schwartz | Crew | Production | Executive Producer |
Brian Eatwell | Crew | Art | Art Direction |
Brian Smedley-Aston | Crew | Editing | Editor |
 David Greene | Crew | Directing | Director |
Eileen Warwick | Crew | Costume & Make-Up | Hairdresser |
 H.P. Lovecraft | Crew | Writing | Book |
Harry Frampton | Crew | Costume & Make-Up | Makeup Artist |
Ken Hodges | Crew | Camera | Director of Photography |
Nat Tanchuck | Crew | Writing | Writer |
 Jack Harding | Crew | Sound | Original Music Composer |
Don Challis | Crew | Sound | Sound Editor |
Herbert Smith | Crew | Camera | Camera Operator |
August Derleth | Crew | Writing | Book |
Caroline Mott | Crew | Costume & Make-Up | Costume Design |
D.B. Ledrov | Crew | Writing | Writer |
Kevin Sutton | Crew | Sound | Sound Mixer |
Hylan Booker | Crew | Costume & Make-Up | Costume Designer |
Phillip Hazleton | Crew | Production | Producer |
Frederick Yale | Crew | Production | Casting |
 Ann Bell | Cast | Actress | Mary Whately, Susannah's Mother |
 Bernard Kay | Cast | Actor | Tait |
 Carol Lynley | Cast | Actress | Susannah Whately Kelton / Sarah |
Celia Hewitt | Cast | Actress | Aunt Sarah |
 Charles Lloyd Pack | Cast | Actor | Barge Master |
 Donald Sutherland | Cast | Actor | Zebulon (voice) |
 Flora Robson | Cast | Actress | Aunt Agatha |
 Gig Young | Cast | Actor | Mike Kelton |
 Murray Evans | Cast | Actor | Gang Member |
 Oliver Reed | Cast | Actor | Ethan |
 Peter Porteous | Cast | Actor | Gang Member |
 Robert Cawdron | Cast | Actor | John Whately, Susannah's Father |
William Devlin | Cast | Actor | Zebulon Whately |
Cliff Diggins | Cast | Actor | Gang Member |
 Judith Arthy | Cast | Actress | Emma |
 Rick Jones | Cast | Actor | Luther Whately |
Ingrid Bower | Cast | Village Girl (uncredited) | |
| Person | Type | Job | Role(s) |
