A razor-sharp thriller from the Edgar Award–nominated author who "blurs the lines between dreams and nightmares" (Abilene Reporter-News, TX).

Darby McCormack was in high school when she first encountered the killer: someone murdered a woman in the woods where Darby and her two best friends were partying. His race to silence the witnesses was sure-footed and violent—but somehow Darby survived.

Twenty-five years later, Darby is a crime-scene investigator for the Boston Police Department, and a chilling case—a woman’s late-night abduction—has her uncovering strange leads to missing women, past and present. As forensic clues lead her closer to a psychopath called the Traveler, Darby must finally resolve the nightmare of her past and come face-to-face with a killer who is determined to keep the missing—and the horrors they endured at his hands—from ever coming to light.