In this classic spy thriller from an Edgar Awardâ€"winning author, a British secret service agency is nearly undone by a counter-espionage attack.
Superspies are out to destroy Department Z. Even worse, the elite British agency has been infiltrated by a double agent. As loyal members of the team turn against one another, Agent Gordon Craigie works to unmask the counterspy before Department Z is annihilated once and for all.
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