Suzanne Perry is having a vivid nightmare. Someone is in her bedroom, touching her, and she can't move a muscle. She wakes, relieved to put the nightmare behind her, but when she opens the curtains, she sees a Polaroid stuck to the window. A photo of her sleeping self, taken during the night. And underneath the words: "I'm watching over you". Her nightmare isn't over. In fact, it's just beginning.

Into the house. Down the stairs. Through the dripping dark of the cellar. Someone is there. Someone that shouldn't be there. As a building awaits demolition, a horrifying discovery is made inside the basement: a cage made of human bones - with a terrified, feral child lurking within. Unbeknownst to DI Phil Brennan and psychologist Marina Esposito, they have disturbed a killer who has been operating undetected for 30 years. A killer who wants that boy back.

But the cage of bones is also a box of secrets - secrets linking Brennan to the madman in their midst.

Until a chance assignment takes GBI investigator Will Trent to the state penitentiary, and to a prisoner who says he recognizes the MO. The attack looks identical to the one he was accused of eight years earlier. The prisoner’s always insisted that he was innocent, and now he’s sure he has proof. The killer is still out there. As Will digs into both crimes, it becomes clear that he must solve the original case in order to reach the truth

When the body of a woman is found hanging from a tree in her front garden, rookie Detective Morgan Brookes is first on the scene. But Olivia Potter is past saving. And when her husband and daughters cannot be traced, Morgan knows there is more to this tragedy. And then she finds them. Lying huddled together in the dark basement, each of their faces covered with a small cotton cloth, their bodies cold to the touch. But as Morgan kneels beside the family, she realizes that one of the girls is still breathing.

A woman is found naked, badly beaten and barely alive in the New Mexico mountains. The shocking discovery plunges Albuquerque Detective Alyssa Wyatt into a case that will test her to the limit. It appears that Callie McCormick is the latest plaything of a shadowy psychopath that leaves a long shadow on the streets of New Mexico - an individual linked to a string of deaths but leaving no evidence. But when Alyssa makes a breakthrough that just might reveal the killer, she unknowingly puts herself in the crosshairs of a brutal maniac - one with an old score to settle.