Still reeling from the death of her fiancé, Detective Anna Travis has thrown herself into her new role as the chief inspector for London's murder squad. When Scotland Yard's missing persons bureau is unable to locate the son of a court employee, the superintendent—James Langton, Anna's former lover turned sometimes friend—urges her to take on the suspicious assignment. But is this new investigation purely a missing persons case—or a full-blown murder inquiry? An ominous pool of blood with no locatable victim leads Anna on a desperate hunt for a man who has disappeared without a trace. With no body, and increasing pressure to make an arrest, Anna becomes obsessed with the smallest details of the case. Now, one man has vanished, a killer may be loose on the streets, and, as Langton looks on, Anna Travis may be losing control of the investigation—and of herself.