World War I battlefield nurse Bess Crawford goes to dangerous lengths to investigate a wounded soldier's background-and uncover his true loyalties-in this thrilling & atmospheric entry in the bestselling "vivid period mystery series" (New York Times Book Review) At the foot of a tree shattered by shelling & gunfire stretcher-bearers find an exhausted officer shivering with cold & a loss of blood from several wounds The soldier is brought to battlefield nurse Bess Crawford's aid station where she stabilizes him & treats his injuries before he is sent to a rear hospital The odd thing is the officer isn't British-he's French But in a moment of anger & stress he shouts at Bess in German When Bess reports the incident to Matron her superior offers a ready explanation The soldier is from Alsace-Lorraine a province in the west where the tenuous border between France & Germany has continually shifted through history most recently in the Franco-Prussian War of 1870 won by the Germans But is the wounded man Alsatian? & if he is on which side of the war do his sympathies really lie? Of course Matron could be right but Bess remains uneasy-and unconvinced If he was a French soldier what was he doing so far from his own lines & so close to where the Germans are putting up a fierce last-ditch fight? When the French officer disappears in Paris it's up to Bess-a soldier's daughter as well as a nurse-to find out why even at the risk of her own life