Title: The fifth man
First published: 1946
Description: From the back cover of the paperback edition:
Five British prisoners have escaped from the Nazis -- or have they?  British Intelligence suspects an elaborate ruse and that one of the five may well be a double agent prepared for counter-espionage.  Tommy Hambledon is assigned to uncover the most dangerous German spy in England.
Subjects: Fiction, Intelligence service, Intelligence officers, Fiction, mystery & detective, general
Places: Great Britain
Time periods: 1942-43