In 1919, Scotland Yard Inspector Ian Rutledge finds himself the target of a mysterious person who is leaving oddly engraved cartridge casings around that seem to point to unfinished business involving the Great War.
Entreated by his former lover, Caroline, to help protect her daughter from a depraved man who has been stalking her, staff investigator Dodge Hanley teams up with a small-town sheriff and enlists methods from his own shady past to find answers.