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