When a cold, naked body is discovered by a couple on a jog through the lush woodlands of Pine Valley, California, new recruit Detective Katie Scott is stunned to discover the victim is Amanda Payton - a much-loved local nurse and the woman at the heart of an unsolved case she’s been investigating whilst getting a grip on her crippling PTSD. Weeks earlier, Amanda had run, battered and bruised, out into the headlights of a passing patrol car. She claimed to have just escaped a kidnapping, but with no strong evidence, the case went cold. The Pine Valley police made a fatal mistake....

Detective Katie Scott has never seen two people more in love than her aunt and uncle as they danced together on the night of their wedding anniversary party. But the next morning, when Katie finds her aunt’s body sprawled across the floor, that perfect image is shattered forever. All fingers point to Katie’s uncle, Pine Valley’s sheriff and protector. Grieving, but certain of her uncle’s innocence, Katie is consigned to the cold case division after she’s discovered searching the house for clues. Does someone want to keep her as far away from this investigation as possible?

When Detective Katie Scott is called to the discovery of a young girl buried on the grounds of a former children’s home in Pine Valley, California, she’s hopeful it’s the end to a devastating cold case she’s been working on. No one has seen Candace Harlan since she ran away from Elm Hill Manor five years ago. Her death will be a tragedy, but it will also bring peace to those who miss her most. But the girl in the ground is not Candace. 

When the bodies of 11 and 12-year-old sisters, Tessa and Megan, are found at the bottom of a ravine - dressed in matching pastel summer outfits, their small bodies broken from the fall - Detective Katie Scott is called to one of the most shocking and heartbreaking crime scenes of her career. 

The body of a young girl lying face down in a swimming pool - white tennis shoes still on her feet, chestnut hair fanned out like a halo - is the last thing Detective Josie Quinn expects to find on an early morning visit to see her brother before class at Denton University. But when she recognizes the girl’s face as she drags her limp body from the water, there’s only one question racing through Josie’s mind: How does a champion swimmer accidentally drown? 

When the remains of two bodies are found in an open grave along a desolate highway in Stillwater, Minnesota, Special Agent Nikki Hunt knows exactly who they are. The bright blue jacket lying on the frozen earth belongs to Kellan Rhodes, the missing boy she’s desperately been trying to find for the last two days. The other body is his mother Dana, who had been Nikki’s lead suspect. 

When 12-year-old Holly Mitchell’s fragile little body is found on the steps of a mountainside church in the small town of Denton, a doll made from pine cones clasped tightly to her chest, Detective Josie Quinn rushes to attend the scene. She knows this little girl’s angelic face; her mother had offered Josie help when she’d needed it most. Searching the girl’s house, Josie is devastated to find that Holly’s mother is dead, too, and her little sister is missing. 

FBI Agent Ella Dark, 29, is given her big chance to achieve her life’s dream: to join the Behavioral Crimes Unit. Ella has a hidden obsession: She has studied serial killers from the time she could read, devastated by the murder of her own sister. With her photographic memory, she has obtained an encyclopedic knowledge of every serial killer, every victim, and every case. Singled out for her brilliant mind, Ella is invited to join the big leagues. 

When local cheerleader Laurie Turner goes missing after practice and her bright red pick-up truck is found abandoned by the side of a quiet road, Detective Jenna Alton fears the worst. Visiting Laurie’s family house, Jenna senses that the teenager’s home life isn’t as perfect as her father would have people believe. Quick to temper and full of hatred towards Laurie’s mother, Dr. Turner doesn’t seem to know the first thing about his own daughter, let alone how long she’s been missing for. 

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.

When Penny Matthews, a seven-year-old girl with blonde curls and a gap-toothed smile, goes missing in the Appalachian mountains, Detective Ellie Reeves is called straight to the scene. According to Penny’s parents, their daughter vanished after a picnic by the creek. All that’s left behind is a pink friendship bracelet etched with “Penny”. 

When the body of a young woman is found, tied to her bed and the victim of a brutal attack in her own home, Detective Morgan Brookes is sickened by what she finds as she searches the house, and unprepared for the nightmares it inspires about her childhood. When the DNA collected gives a positive ID, Morgan can’t wait to put the attacker behind bars. But the person it matches to is already in prison. How could the DNA of someone who has been locked up for over 20 years have shown up in Morgan’s crime scene? And then they make another close match - to Morgan herself.

Detective Ellie Reeves heads into the wilds of the Appalachian Mountains when she wants to get lost - to forget the whispers chasing her and the past that keeps her up at night. She’s sick of having to prove herself to her small town. But hiking in the endless miles of woods isn’t the escape she was hoping for. One night, as dusk falls, a gust of wind blows some petals on to Ellie’s path. Following the trail, she finds a golden-haired young woman dead on a bed of daffodils, with a note: Monday’s child is fair of face. 

Arriving with her partner Noah for dinner at his family’s immaculate countryside home, Detective Josie Quinn is devastated to find Noah’s mother, Colette, lying lifeless in the back garden, her mouth clogged with soil. Searching the house for answers, Josie’s team don’t know what to make of the rosary beads buried in the dirt near the body or the hidden file labelled “Drew Pratt”, the small town of Denton’s most famous missing person.

When the body of a teenage runaway is found hidden inside someone else’s grave in a small-town cemetery in the Lake District, an urgent call is made to forensic pathologist Beth Adams. Still traumatised by a recent attempt on her own life, one look at the beautiful girl’s broken body is enough to bring Beth out of hiding for the first time since her attack. She’s the only one who can help her trusted friend, Detective Josh Walker, crack the most shocking case of his career.