Book excerpt: From a detective who knew “more about identifying . . . serial killers than anyone else in the field,” an account of the search for the Green River Killer (Ann Rule, New York Times–bestselling author of The Stranger Beside Me). After a search of over twenty years, one of America’s most elusive serial killers was finally apprehended. Now, read the true story of one man’s attempt to get inside the mind of the Green River Killer July 15, 1982: a woman’s strangled body was found, caught on the pilings of Washington state’s Green River. Before long, the “Green River Killer” would be suspected in at least forty-nine more homicides, with no end in sight. Then the authorities received an unbelievable letter from the infamous serial killer Ted Bundy—then on Florida’s death row—offering to help catch the Green River Killer. But he would only talk to one man: Robert Keppel, the former homicide detective who had helped track Bundy’s cross-county killing spree. Now these conversations are revealed, in which Bundy speculates about the motive and methods of the Green River Killer—and reveals his own twisted secrets as well. Now, as never before, we look into the face of evil . . . and into the heart of a killer.