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...
Paul Newman
Rearden
Dominique Sanda
Mrs. Smith
James Mason
Sir George Wheeler
Harry Andrews
Mackintosh
Ian Bannen
Slade
Michael Hordern
Mr. Brown
Nigel Patrick
Soames-Trevelyan
Peter Vaughan
Brunskill
