Paul Toombes
Vincent Price
Herbert Flay
Peter Cushing
Carol Clayton
Jenny Lee Wright
Ellen
Julie Crosthwaite
Inspector Harper
John Garrie
Bradshaw
Ian Thompson
Psychiatrist
Peter Halliday
Basil (archive footage)
Basil Rathbone
(archive footage)
Boris Karloff
Passenger on Quayside (uncredited)
Hyma Beckley
George the Make-Up Artist (uncredited)
George Blackler
CID Inspector (uncredited)
Robert Cawdron
Oliver Quayle
Robert Quarry
Reporter (uncredited)
Michael Craze
Police Sergeant (uncredited)
David Jackson
Ship's Steward (uncredited)
Patrick Jordan
Boy Fishing (uncredited)
Earl Rhodes
Pretty Blonde (uncredited)
Pam Rose
Christopher Sandford
Hollywood Party Guest (uncredited)
Reg Thomason
Faye
Adrienne Corri
Elizabeth Peters
Linda Hayden
Julia Wilson
Natasha Pyne
T.V. Interviewer
Michael Parkinson
Gerry Blount
Barry Dennen
Alfred Peters (as Ellis Dale)
Ellis Dayle
Louise Peters
Catherine Willmer
Director
Jim Clark
Producer
Milton Subotsky
Executive Producer
Samuel Z. Arkoff
Max Rosenberg
Screenplay
Greg Morrison
Ken Levison
Editor
Clive Smith
Construction Manager
Bill Waldron
Cinematography
Ray Parslow
Associate Producer
John Dark
Casting
Rose Tobias Shaw
Makeup Artist
Assistant Art Director
John Siddall
Music
Douglas Gamley
Camera Operator
Ken Coles
Art Direction
Tony Curtis
Hairdresser
Helen Lennox
Production Manager
Pat Green
First Assistant Director
Allan James
Special Effects
Roy Spencer
Sound Editor
Peter Horrocks
Second Assistant Director
Nigel Wooll
Norman Kerss
Ruggero Salvadori
Sound Recordist
Danny Daniel
Clapper Loader
Ian Smith
Third Assistant Director
Michael Green
Gerry Humphreys
Wardrobe Master
Dulcie Midwinter
Continuity
Lorna Selwyn