Even deadlier than the bloody engagements on the battle-scarred fields of France, the Spanish influenza epidemic in the spring of 1918 is bringing hundreds of new patients to World War I battlefield nurse Bess Crawford. But war and disease are not the only killers to strike with cold and brutal efficiency.

Concealed among the countless dead waiting for burial is the body of an officer whose end was not hastened by a German bullet or an airborne virus. This soldier was murdered, and his death touches Bess deeply, for he was a family friend who once served in her father's regiment.

Falling ill herself before she can report the heinous crime, Bess recovers too late to consult with the only other witness, who, by all official accounts, has since hanged himself. Bess refuses to let a killer escape justice, though her persistence turns an assassin's attention in her direction. Or is she already his next target?