Credits
Cast

Patrick Macnee
Derek Longbow

Edward Woodward
Dr. Holstrom

Alexander Davion
Tony Seymore

Peter Cushing
Dr. Walter Goodrich

Johnny Sekka
Bob Kirby

Madeleine Hinde
Penelope

William Mervyn
Marc Honeydew

Patrick Mower
Richard Fountain

David Lodge
Colonel

Imogen Hassall
Chriseis

Valerie Van Ost
Don's Wife

Françoise Pascal
Girl at Orgy (uncredited)

Marianne Stone
Cheerful Lady at Party (uncredited)
Art
George Provis
Production Design
Camera
Ronnie Maasz
Camera Operator
Desmond Dickinson
Director of Photography
Directing
Robert Hartford-Davis
Director
Julian More
Director, Screenplay
Editing
Maxine Julius
Assistant Editor
Peter Thornton
Editor
Production
Peter Newbrook
Executive Producer
Graham Harris
Producer
Sound
Don Deacon
Dialogue Editor
Robert Richards
Music
Tony Dawe
Sound Recordist
Dennis Whitlock
Sound Recordist