A member of British Intelligence assumes a fictitious criminal identity and allows himself to be caught, imprisoned, and freed in order to infiltrate a spy organization and expose a traitor; only, someone finds him out and exposes him to the gang...

• Newman-Foreman Company
• Warner Bros. Pictures
• Paul Newman
• Dominique Sanda
• James Mason
• Harry Andrews
• Ian Bannen
• Michael Hordern
• Nigel Patrick
• Peter Vaughan