Canada's leading radio show host, Kevin Brace, comes to the door of his luxury condominium with his hands covered in blood and tells the newspaper delivery man: "I killed her." The "her" in question is his young wife, whose body lies in the bathtub with a knife wound through the sternum. So, if he killed her, where's the mystery? That's the question asked by the detectives plowing through what should be an open-and-shut case. With the appearance of...