Paris in Disguise: A World War II espionage thriller (Alex Kovacs thriller series Book 5)

"Paris is cold and hungry. The Germans are in the fourth year of their occupation, and while a Resistance movement flourishes, it is small and perilous beyond belief. The lives of Resistance radio operators can be measured in weeks, not months — such is the mortal danger. But are they being caught by Nazi efficiency or by betrayal? Alex Kovacs is a part of one of those Resistance cells, a jack-of-all-covert-trades, sometimes a courier of information, other times a guide for new agents, always a committed member of the Resistance movement whose eyes are nonetheless open to its flaws. When several of his fellow agents are caught in rapid succession by the Germans, concern grows that there is a traitor within the cell. And when an outlandish plan to unmask the traitor is proposed, Alex agrees to take on a new identity and a grand lifestyle in order to infiltrate the highest levels of the Gestapo’s murderous operation."–Amazon.com.