The body of college student Chrissie Lowe lies curled up in a ball - long red cuts along her arms suggesting how she had met her death. Detective Jenna Alton is called in to investigate. Purplish bruising seen on Chrissie's upper arms makes Jenna believe there is more to Chrissie's death than others suspected, and she soon finds herself following the trail of the student's last few moments, leading her to the scene of a party that had ended just hours before Chrissie's body was found.

It’s a hideous echo of a violent past. Across America, murders are being committed with all the twisted hallmarks of the Boston Strangler, the Zodiac Killer and Son of Sam. The media frenzy explodes and Nashville homicide lieutenant Taylor Jackson knows instantly that The Pretender is back… and he’s got helpers. As The Pretender’s disciples perpetrate their sick homages – stretching police and FBI dangerously thin – Taylor tries desperately to prepare for their inevitable showdown. And she must do it alone. To be close to her is to be in mortal danger, and she won’t risk losing anyone she loves.

Everyone in the small town of Denton is searching for Isabelle Coleman, a missing 17-year-old girl. All they've found so far is her phone and another girl they didn't even know was missing. Mute and completely unresponsive to the world around her, it's clear this mysterious girl has been damaged beyond repair. All Detective Josie Quinn can get from her is a name: Ramona. Currently suspended from the force for misconduct, Josie takes matters into her own hands as the name leads her to evidence linking the two girls.

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”. 

Cady Maddix survived a brutal upbringing - emotionally scarred but hardened - with a will for self-preservation. Hunting fugitives has given her life purpose and control. But when the Deputy US Marshal returns home to care for her Alzheimer’s-stricken mother, a new case stirs old memories. Child killer Samuel Aldeen has broken out of a nearby facility for the criminally insane, and the authorities believe he was aided by accomplices, both inside and out. 

An eight-year-old girl, Chelsea Compton, is missing in Pine Valley, California, and for Detective Katie Scott it’s a cruel reminder of the friend who disappeared from summer camp 20 years ago. Unable to shake the memories, Katie vows she won’t rest until she discovers what happened to Chelsea. But as Katie starts to investigate, the case reveals itself to be much bigger and more shocking than she feared. Hidden deep in the forest she unearths a makeshift cemetery: a row of graves, each with a brightly colored teddy bear.

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.  

In the remote forests of Stillwater, Minnesota, you can scream for days and no one will hear you. So when the bodies of two 15-year-old girls are discovered frozen in the snow, Special Agent Nikki Hunt is sure the killer is local: Someone knew where to hide the girls and thought they would never be found. Though Nikki hasn’t been home in 20 years, she knows she must take over the case.

The beautiful young woman is perfectly still, curled up in the trunk of the car, her long dark hair hiding her face. Her cotton blouse has ridden up a little, revealing two small dots an inch apart on her back. Just like the others. Guilt has kept FBI Agent Tori Hunter away from her home in Manchester Bay, Minnesota for 20 years, ever since her twin sister disappeared on the Fourth of July, when the girls should have been together. But when she receives an anonymous newspaper clipping about another missing girl, Genevieve, Tori is dragged back to the past.

When Detective Casey White discovers the body of a beautiful teenage girl in a white nightgown near the shoreline in North Carolina’s Outer Banks, a familiar fear floods through her. Could this be Hannah, her sweet, blue-eyed daughter snatched from home 14 years ago? But it only takes one look to confirm that the girl with dark bruising around her throat is another family’s tragedy. Putting her own grief aside, Casey digs into unsolved missing child cases in the area. The victim is Cheryl Parry, one of two little girls taken during a family beach vacation nine years ago. 

He was suspect number one - the man who tried to kill Deputy Mattie Cobb and may have killed her father 30 years earlier. But when Mattie and cold-case Detective Jim Hauck reach the Colorado state prison where they will finally get to interview him, he's found dead in his cell. There's only one clue: a map leading to Timber Creek and rugged Redstone Ridge. Following the clue, Mattie and her K-9 partner, Robo, journey into the burned forest surrounding Redstone Ridge. 

When she was just 12 years old, Mackenzie Price came home to find her father bleeding to death on the kitchen floor. She will never forget that night, nor what her mother asked her to do.... Twenty years later, Detective "Mack" Price is back in Lakemore, despite vowing never to return. Determined to atone for the sins of the past, she is unstoppable in her quest for justice. 

When Claire sees a car full of children careen into a river, she rushes to the rescue. But the driver, a mother named Leah Holloway, prefers to drown. For Claire and her ex, Detective Connor Parks, it doesn't add up. What would motivate a woman with a beautiful family and a successful career to resort to such unspeakable extremes? What Connor finds out confirms Claire's suspicions of something dreadful behind Holloway's picture-perfect facade: a link between the terrified mother and a serial strangler targeting Sacramento soccer moms.

For decades the Moore Asylum was home to the forgotten children of Brooklyn Bay. But ever since a scandal forced its closure, the abandoned building has cast an imposing shadow. Until now - when an elderly man is found dead, his body strapped to an ancient gurney. Detective Lucy Harwin, still reeling from a previous case that ended in the devastating murder of a mother and her child, finds herself on the trail of a killer ruthlessly fixated on avenging the asylum's wrongs.

Detective Kay Sharp vowed she’d never return to her childhood home. But now Kay’s back, and only she can solve the crime that has rocked the tight-knit community of Mount Chester to its core. A dead woman has been found by Silent Lake under the dew-covered fall leaves. Kay knows the missing-person investigation could turn into a murder case at any second. But as she hunts for the culprit, her own past closes in on her. Can she find the killer before it’s too late? And will the secret she thought she’d buried stay that way?