The Great War has been won—but victory has its price. The year is 1919, and Ian Rutledge has returned to London to resume his position as Scotland Yard inspector, bringing nightmares and ghosts home with him from the French battlefields. Tormented and suffering from shell shock, he is immediately plunged into the affair of a popular colonel believed murdered by a decorated war hero—a case that is a personal and political minefield that could destroy Rutledge's career and what remains of his sanity.