Cast
Anton Diffring
Dr. Erik Leichner
William Sylvester
Vince Warren
Justine Lord
Diane Graydon
Martin Miller
Schroeder
Tony Garnett
Brennan
Warren Mitchell
Chemist
Philip Locke
Foster
Jacqueline Jones
Vanessa Palmer
Geoffrey Palmer
Dr. Tanfield
Sylva Langová
Vivienne Leichner
Peter Howell
Inspector Macready
Oliver MacGreevy
Wilkinson
David Futcher
Whitehead
Clifford Earl
Sergeant
Derek Partridge
Detective
Fred Beauman
Policeman
Michael Moyer
Policeman
Roland Curram
Soldier
Crew
Norman Harrison
Director
Jack Greenwood
Producer
Ronnie Curtis
Casting Director
Arthur La Bern
Screenplay
Edgar Wallace
Original Story
James Wilson
Director of Photography
Derek Holding
Editor
Peter Mullins
Art Direction
Pat McDermott
Hairdresser
Michael Morris
Makeup Artist
Ron Fry
Production Manager
Ted Lewis
Assistant Director
Brian Blamey
Sound Editor
Sidney Rider
Sound Recordist
Noel Rowland
Camera Operator
Bernard Ebbinghouse
Original Music Composer
