When Benjamin Grant's son disappeared a year ago, he threw himself into the search, and his obsession left him without a home, wife, or job. Now, he's managed to find work at the United States Postal Service's Mail Recovery Center, which he hopes will prove an invaluable tool in his investigation. With the help of his coworker, Sylvia-a kleptomaniac artist-Ben learns the ins and outs of a warehouse full of lost mail, and explores every lead in...