"January 1942. The Avallon Hotel & Spa is where high society goes to see and be seen. Located deep in the West Virginia mountains, where healing sweetwater flows, the hotel is managed by a local, June Hudson, whose skills were noted by the wealthy Guilfoyles who own the place. War has begun, and June is trying to shield the Avallon from it, but when the owner's son makes a deal with the State Department to house dozens of Axis diplomats, June must convince her staff -- many of whom have sons and husbands heading to battle -- to offer luxury to Nazis for the war effort. Peacefully. Meanwhile, FBI agent Tucker Minnick is searching for a spy among the detainees. He has his own history with West Virginia and would have done anything to avoid coming back, but this mission is an exile that he can't escape unless he earns it. As tension grows between locals and the detainees, Tucker's spy games disturb the peace, and the eerie sweetwater proves more dangerous than once thought. June's future at the Avallon hangs in the balance -- but who is she without the hotel? And what is it without her? Maggie Stiefvater makes her adult fiction debut in this mesmerizing portrait of an unlikely heroine, a hotel-and a world-in peril, and the love that can bloom even in such unlikely circumstances"-- Provided by publisher.