Lansen
Eric Porter
Eva Peters
Hildegard Knef
Sparks, the Radioman
Donald Sumpter
The Mate
Victor Maddern
The One-Eyed Crewman
Michael Ripper
Sara
Dana Gillespie
El Supremo
Darryl Read
The Inquisitor
Eddie Powell
Unity Webster
Suzanna Leigh
Harry Tyler
Tony Beckley
Patrick, the bartender
Jimmy Hanley
Nick, chief engineer
James Cossins
The Helmsman
Reg Lye
Ricaldi
Ben Carruthers
Dr. Webster
Nigel Stock
First Officer Hemmings
Neil McCallum
Producer
Michael Carreras
Original Music Composer
Gerard Schurmann
Director of Photography
Paul Beeson
Editor
Chris Barnes
Director
Screenplay
Novel
Dennis Wheatley
Associate Producer
Peter Manley
Makeup Artist
George Partleton
Script Supervisor
Doreen Soan
Music Supervisor
Philip Martell
Costume Design
Carl Toms
Art Direction
Arthur Lawson
Special Effects
Cliff Richardson
Hairstylist
Elsie Alder
Sound Editor
Roy Baker
Casting
Irene Lamb
Camera Operator
H. A. R. Thomson
Robert A. Mattey
Wardrobe Master
Mary Gibson
Executive Producer
Anthony Hinds
Supervising Editor
James Needs