Dr. Brockton

Joan Crawford

Sam Murdock

Michael Gough

Inspector Greenham

Bernard Kay

Anne Brockton

Kim Braden

Malcolm Travers

David Griffin

Cliff

John Hamill

Trog

Joe Cornelius

Magistrate

Thorley Walters

Bill

Geoffrey Case

Dr. Selbourne

Jack May

Dr. Richard Warren

Robert Hutton

Reporter

Maurice Good

Reporter (uncredited)

Rona Newton-John

Colonel Vickers

Simon Lack

Alan Davis

David Warbeck

Little Girl

Chloe Franks

Dr. Kurtlimer (uncredited)

Paul Hansard

Dr. Pierre Duval (uncredited)

Robert Crewdson

John Dennis

Brian Grellis

Nurse

Cleo Sylvestre

Butcher

Golda Casimir

Little Girl's Mother

Shirley Conklin

Anaesthetist

John Baker

Butcher

Bartlett Mullins