Mike Kelton
Gig Young
Susannah Whately Kelton / Sarah
Carol Lynley
Ethan
Oliver Reed
Aunt Agatha
Flora Robson
Emma
Judith Arthy
Mary Whately, Susannah's Mother
Ann Bell
Zebulon Whately
William Devlin
Barge Master
Charles Lloyd Pack
Tait
Bernard Kay
Book
H.P. Lovecraft
Director
David Greene
Original Music Composer
Jack Harding
Director of Photography
Ken Hodges
August Derleth
Costume Design
Caroline Mott
Writer
Nat Tanchuck
D.B. Ledrov
Camera Operator
Herbert Smith
Associate Producer
Alexander Jacobs
Basil Kirchin
Hairdresser
Eileen Warwick
Makeup Artist
Harry Frampton
Editor
Brian Smedley-Aston
Sound Editor
Don Challis
Sound Mixer
Kevin Sutton
Casting
Frederick Yale
Executive Producer
Bernard Schwartz
Costume Designer
Hylan Booker
Producer
Phillip Hazleton
Art Direction
Brian Eatwell