Sebastian is an undisciplined mathematics genius who works in the "cipher bureau" of the British Intelligence. While cracking enemy codes, Sebastian finds time to romance co-worker Rebecca Howard.
Dirk Bogarde
Sebastian
Susannah York
Rebecca Howard
Lilli Palmer
Elsa Shahn
John Gielgud
Head of Intelligence
Janet Munro
Carol Fancy
Ronald Fraser
Toby
Margaret Johnston
Miss Elliott
Nigel Davenport
Gen. Phillips
