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 and atmospheric entry in the bestselling "vivid period mystery series" (New York Times Book Review). At the foot of a tree shattered by shelling and gunfire, stretcher-bearers find an exhausted officer, shivering with cold and a loss of blood from several wounds. The soldier is brought to battlefield nurse Bess Crawford's aid station, where she stabilizes him and 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 and 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 and Germany has continually shifted through history, most recently in the Franco-Prussian War of 1870, won by the Germans. ...