The #1 New York Times bestselling true crime author presents “a solid, compelling account of that most vicious of criminals, the random serial killer” (Library Journal).Through the 1970s and 80s, a dangerous serial killer stalked Northern California along Interstate 5. Dubbed the I-5 Strangler, Roger Kibbe was incredibly skilled at staying ahead of investigators as his victim count rose. Even after he was identified, there wasn’t enough evidence to charge him with murder. Instead, investigators had to build their murder case over the course of months while Kibbe was locked up on an assault conviction. Drawing on hundreds of hours of exclusive interviews with key investigators, as well as other important figures such as the Kibbe’s reclusive wife, #1 New York Times bestselling author Bruce Henderson builds a fascinating portrait of this unrepentant murderer.“Trace Evidence is a gripping, fast-paced account of what it takes to capture and make a winnable case against an elusive serial killer.” —Vincent Bugliosi, author of Helter Skelter"A masterful job…Lusciously detailed and immensely readable.”—Booklist