The Sign of the Book - John Dunning

Assessing a book's value is Denver cop-turned-bookseller Cliff Janeway's expertise. But even a pro like Janeway could be supremely challenged by certain signed first editions. When is an autograph authentic? How can forgeries appear to be so convincingly real? The same questions apply, it seems to a murder investigation in tiny paradise, Colorado. Janeway agrees to help his lover, attorney Erin D'Angelo, determine if Erin's estranged childhood friend killed her husband - or was her confession designed to protect her troubled young son?