Vincent Price
Paul Toombes
Acting
Peter Cushing
Herbert Flay
Acting
Robert Quarry
Oliver Quayle
Acting
Adrienne Corri
Faye
Acting
Linda Hayden
Elizabeth Peters
Acting
Natasha Pyne
Julia Wilson
Acting
Michael Parkinson
T.V. Interviewer
Acting
Barry Dennen
Gerry Blount
Acting
Ellis Dayle
Alfred Peters (as Ellis Dale)
Acting
Catherine Willmer
Louise Peters
Acting
Jenny Lee Wright
Carol Clayton
Sound
Julie Crosthwaite
Ellen
Acting
John Garrie
Inspector Harper
Acting
Ian Thompson
Bradshaw
Acting
Peter Halliday
Psychiatrist
Acting
Basil Rathbone
Basil (archive footage)
Acting
Boris Karloff
(archive footage)
Acting
Hyma Beckley
Passenger on Quayside (uncredited)
Acting
George Blackler
George the Make-Up Artist (uncredited)
Costume & Make-Up
Robert Cawdron
CID Inspector (uncredited)
Acting
Michael Craze
Reporter (uncredited)
Acting
David Jackson
Police Sergeant (uncredited)
Acting
Patrick Jordan
Ship's Steward (uncredited)
Acting
Earl Rhodes
Boy Fishing (uncredited)
Acting
Pam Rose
Pretty Blonde (uncredited)
Acting
Christopher Sandford
Reporter (uncredited)
Acting
Reg Thomason
Hollywood Party Guest (uncredited)
Acting