"A peaceful Welsh village is thrown into turmoil when a terrified boy stumbles on a body in a nearby river. The man appears to have fallen from the canal aqueduct spanning the valley. But there is no identification on the body other than a military tattoo and an unusual label in his shirt collar; he isn't a local, and no one will admit to having seen him before. With little to go on, the village police turn to Scotland Yard and Inspector Ian Rutledge...