By Robert D. Keppel, Ph.D., with William J. Birnes. Foreword by Ann Rule. "Interpreting the Calling Cards of the Serial Murderer." Keppel "went one-on-one" with Ted Bundy to try to solve the Green River case. This book jumps off that research (and Riverman) to "shed light on the darkest corners of the pathological mind."
The paperback is in evidently used shape: cracked spine, edgewear and creasing to the covers, some foxing. But it's a cromulent reading copy.