As the Allies struggled inland from Normandy in August of 1944, the fate of Paris hung in the balance. Other jewels of Europe -- sites like Warsaw, Antwerp, and Monte Cassino -- were, or would soon be, reduced to rubble during attempts to liberate them. But Paris endured, thanks to a fractious cast of characters, from Resistance cells to Free French operatives to an unlikely assortment of diplomats, Allied generals, and governmental officials. Their...