Kennedy Farmer takes off on her usual running route through the mountain trails of New Mexico, but she never returns home from her run. As the search for Kennedy begins, Detective Alyssa Wyatt and her squad face another terrifying case when the body of a young woman named Rheagan Pembroke is discovered in the desert surrounding Albuquerque. Her wounds horrify even the hardened squad of the Albuquerque P.D. The case takes an even darker turn when they discover a polaroid stuffed into the victim's mouth, showing the body of Gunner Galveston, a murder victim from fourteen years before. As the police are taunted with more gruesome packages and blood-curdling phone calls, it becomes evident that a serial killer has been operating in plain sight.

To catch the killer, Detective Wyatt and her team need to understand the savage desires driving them...before Kennedy's time runs out.