Calificación
Reparto

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