Sergeant Jax Moretti and his partner, Detective Juliette Reid, are hunting a sadistic serial killer and rapist who has been stalking the streets of the Polk County area for nearly a decade. With little-to-no evidence, Moretti and Reid are desperate to find this sick and twisted monster as the body count rises. And Jax soon finds himself falling for Ali Knox, the woman who may hold the answers they've been searching for.When Ali Knox submits her DNA to a DNA database, she was merely searching for someone from her past. But when she's linked to a six-year-old deceased Jane Doe, her world is quickly thrusted into chaos.As Jax and Juliette dig deeper, they realize the two cases are connected. But the closer he gets to Ali, the more complex this case becomes. And when Ali finds herself in danger, Jax is determined to keep her safe and catch a sadistic killer whose reign of terror is worse than anything found in nightmares.But nothing can prepare him for what he will find.Because the worst monsters are the ones you forget. And remembering might be fatal.