The Confession by Charles Todd

A dying man walks into a London police station in 1920 and tells Inspector Ian Rutledge that he killed a man in 1915 and got away with it. But when Inspector Rutledge goes to investigate, he finds that the man is not who he said he was. And therein lies a mystery--or two. Did someone else kill the supposed victim? And who was the alleged killer really? The Confession is the latest in the always engrossing "Inspector Rutledge" series by the mother/son writing team known as Charles Todd. Rutledge ends up in a remote town in the marshlands populated with unfriendly citizens who go out of their way to keep him from finding the truth--about the town and the dead man. As always, Rutledge is "accompanied" by the voice in his head, the spirit of Hamish MacLeod, a good man whose death during the war Rutledge feels responsible for.