Newly divorced and with his career in jeopardy, Detective Connor Parks takes solace in the arms of a beautiful woman he meets at a bar. The next morning, Claire Fletcher is gone, leaving nothing behind but an address and a decade-old mystery. The address leads to the Fletcher family home, where Claire's siblings inform Connor that their 15-year-old sister was abducted from a city street 10 years ago and is presumed dead.

FBI analyst Kassidy Bishop is assigned to the "'For You' Killer" task force after a series of sadistic murders bearing the same signature arise in different parts of the country. The homicides are both calculated and savage, occurring in different states, but bearing the same signature: the words "for you" scribbled at each crime scene. The case chills Kassidy, bringing back memories of her own encounter with a violent criminal five years earlier.

Three children, running in the woods behind their school, stumble upon a partially buried female body, eyes and mouth glued shut. Close behind the children is their teacher, Anne Navarre, shocked by this discovery and heartbroken as she witnesses the end of their innocence. What she doesn't yet realize is that this will mark the end of innocence for an entire community, as the ties that bind families and friends are tested by secrets uncovered in the wake of a serial killer's escalating activity.

Fourteen years ago, high school track star Sydney Adams was gunned down in Philadelphia's Fairmount Park. The investigation yielded useless clues, and the case went cold. But homicide detective Augustus Knox never gave up on finding Sydney's killer. Now retired from the police force and with only months to live, he enlists the help of private investigator Jocelyn Rush to clear the case once and for all.

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”. 

Plagued by traumatic childhood memories, crime reporter Sawyer Brooks still struggles to gain control of her rage, her paranoia, and her life. Now, after finally getting promoted at work, she is forced to return home and face her past. River Rock is where she’d been abandoned by her two older sisters to suffer alone, and in silence, the unspeakable abuses of her family. It’s also where Sawyer’s best friend disappeared and two teenage girls were murdered. Three cold cases dead and buried with the rest of the town’s secrets.

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.

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.

After a party when her parents are away, 18-year-old Kerry Dowling is found fully dressed at the bottom of the family pool. The immediate suspect is her boyfriend, who had a bitter argument with her at the party. Then there is a 20-year-old neighbor who was angry because she didn't invite him to the party. Or is there someone else who has not yet been seen on the radar? Kerry's older sister, Aline, a 28-year-old guidance counselor, is determined to assist the prosecutor's office in learning the truth. She does not realize that now she is putting her own life in danger....

Frankie Elkin is an average middle-aged woman, a recovering alcoholic with more regrets than belongings. But she spends her life doing what no one else will - searching for missing people the world has stopped looking for. When the police have given up, when the public no longer remembers, when the media has never paid attention, Frankie starts looking. A new case brings her to Mattapan, a Boston neighborhood with a rough reputation. She is searching for Angelique Badeau, a Haitian teenager who vanished from her high school months earlier. 

Jane Hardy is appointed interim sheriff in Pelican Harbor, Alabama, after her father retires, but there's no time for an adjustment period. When her father is arrested for theft and then implicated in a recent murder, Jane quickly realizes she's facing someone out to destroy the only family she has. After escaping with her father from a cult 15 years ago, Jane has searched relentlessly for her mother - who refused to leave - ever since. Could someone from that horrible past have found them?

Blake Wilder is plagued with nightmares from her dark and twisted past. Fourteen years ago, her entire family was taken from her. Her parents murdered and her sister taken. At the age of 22, Blake joined the FBI in hopes of one day discovering the truth behind the mysteries of her own past. 

For more than twenty-five years, Philadelphia homicide detective Bree Taggert has tucked away the nightmarish childhood memories of her parents’ murder-suicide…. Until her younger sister, Erin, is killed in a crime that echoes that tragic night: innocent witnesses and a stormy marriage that ended in gunfire. There’s just one chilling difference. Erin’s husband, Justin, has vanished.

In the lonely woods around Grizzly Falls, Montana, the first body is discovered, stripped naked and tied to a tree. Alvarez and Pescoli have been hoping for a career-making case, but this is a nightmare. The killer stages car accidents on icy, isolated roads and “rescues” his victims. He toys with them, heals them, earns their trust...before subjecting them to a slow, agonizing death. 

Ten years ago as an undergrad, Joan Mason escaped an arsonist’s fire. Shaken, she fled the small collegiate Montana town, leaving behind friends and not looking back. Now a Philadelphia homicide detective, Joan’s trying to put her traumas to rest. It’s not easy. Elijah Weston, the classmate who torched her house, is out of prison and returning to Missoula. Gut instinct tells Joan he’ll strike again. To stop him, she must return to the past as well. To face not only the man she fears but Detective Gideon Bailey, too. The man she loved and left behind.