Calificación
Reparto

Jennifer Hillary
Penny Bowers

Anthony Ainley
Bowers-One

Bernard Brown
Bowers-Two

Gerald Sim
Det. Sgt. Greene

Derek Benfield
Dr. Liam Moore

David Morrell
Sam Sheppard

Margaret Anderson
Sheila Sherwood

Alan Downer
John Sherwood

Pamela Craig
Miss Pringle