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At the French embassy, military attaché Colonel Jean-Francois Mercier is drawn into a world of abduction, betrayal, and intrigue in the diplomatic salons and back alleys of Warsaw.
When the Nazis find out that Mercier has been spying on them, his own life becomes their target.
Mercier goes undercover to Czechoslovakia on the trail of the elusive Chaika, a man who can lead him into the heart of the Nazi war machine.
Series Finale: Mercier has escaped - but at what cost? It's only a matter of time before his past catches up with him...