Suspect
Cast
Ian Wilson
Pin Table Man
Murray Melvin
Teddy Boy
Tony Britton
Dr. Robert Marriott
Virginia Maskell
Dr. Lucy Byrne
Ian Bannen
Alan Andrews
Geoffrey Bayldon
Rosson
Margaret Lacey
Prince's Secretary
Peter Cushing
Professor Sewell
Raymond Huntley
Sir George Gatting the Minister of Defense
Basil Dignam
Dr Childs
John Payne
Iverson
Andre Charisse
Heller
Kenneth Griffith
Dr Shole
Thorley Walters
Special Agent Prince
Donald Pleasence
Parsons, alias Bill Brown
Spike Milligan
Arthur, lab orderly
Sam Kydd
Slater
Anthony Booth
Parkin
Brian Oulton
Director