As far as Preston Wright is concerned, this has been the worst day of his life. He just lost his job, his marriage is failing, his son has been diagnosed with a terminal illness and - to make matters worse - he just drowned in the Chattooga River. As he sits, holding vigil over his own body, his childhood best friend, Kevin Plummer, is there to comfort him. This is quite difficult for Preston to grasp, given that Kevin has been dead for seven years. As teenagers, the two young men made a pact: should one of them die, he would return from the afterlife and contact the one left behind. Now that...