A murderer hopes to escape his death sentence by identifying the leaders of a spy ring.
Terence Morgan
Inspector Ralph Brown
Yolande Donlan
Jill Wilson
Anthony Oliver
Inspector Newcombe
André Morell
Robert Isaac Pitt
Reginald Beckwith
Harold
Ursula Howells
Antonia Pitt
Guido Lorraine
Pietr Revski
Basil Dignam
Wing Commander Riddle
