As a child, Abby Mullen escaped the insidious Wilcox cult when it literally went down in flames. Years later, she’s the NYPD’s best hostage negotiator and a mother. She thought the worst part of her life was behind her. Until now. Armed conspiracy theorists called the Watchers have attacked the local high school - and taken her daughter hostage. With the delusional Watchers holding her child at gunpoint, the unflappable Abby might be at her breaking point. But the clock is ticking on her daughter’s life.

Twenty-year-old Kendele Byers is savagely killed and buried in a shallow grave. She had a violent past, a bizarre, kinky line of work, and the suspect list grows longer every day. But when another woman is murdered, Detective Mitchell Lonnie realizes that there's something much more sinister afoot: a connection between the two murders. Both victims had received a clue hinting at their oncoming demise several minutes before they were attacked. There's a serial killer in Glenmore Park.

Three Chicago women have been found strangled, embalmed, and posed as if still alive. Doubting the findings of the local PD’s profiler, the FBI calls on forensic psychologist Zoe Bentley to investigate. Zoe quickly gets off on the wrong foot with her new partner, Special Agent Tatum Gray. Zoe’s a hunter, intense and focused; Tatum’s a smug maverick with little respect for the rules.

Elle Castillo once trained as a social worker, supporting young victims of violent crime. Now, she hosts a popular true crime podcast that focuses on cold cases of missing and abducted children. After four seasons of successfully solving these cases in Minnesota’s Twin Cities, Elle decides to tackle her white whale: The Countdown Killer. Twenty years ago, TCK was terrorizing the community, kidnapping and ritualistically murdering three girls over seven days, each a year younger than the last. 

Caitlin Hendrix has been a narcotics detective for six months when the killer at the heart of all her childhood nightmares reemerges: the Prophet. An UNSUB - what the FBI calls an unknown subject - the Prophet terrorized the Bay Area in the 1990s and nearly destroyed her father, the lead investigator on the case. The Prophet's cryptic messages and mind games drove Detective Mack Hendrix to the brink of madness.

On the muddy banks of the Calumet River, a body has been found posed next to a series of mysterious glyphs and bearing wounds from a ritualistic slaying. Chicago detective Addie Bisset knows only one man who can decipher the message left by the killer: her friend Dr. Evan Wilding. A brilliant forensic semiotician, Evan decodes the etchings as Viking Age runes. They suggest either human sacrifice or righteous punishment. But to what god? And for what sins? Only one thing is clear from the disturbing runic riddles: there are more victims to come.

Tracy Crosswhite has spent 20 years questioning the facts surrounding her sister Sarah’s disappearance and the murder trial that followed. She doesn’t believe that Edmund House - a convicted rapist and the man condemned for Sarah’s murder - is the guilty party. Motivated by the opportunity to obtain real justice, Tracy became a homicide detective with the Seattle PD and dedicated her life to tracking down killers.

Over twenty years ago, the heiress Patricia Lockwood was abducted during a robbery of her family's estate, then locked inside an isolated cabin for months. Patricia escaped, but so did her captors - and the items stolen from her family were never recovered. Until now. On the Upper West Side, a recluse is found murdered in his penthouse apartment, alongside two objects of note: a stolen Vermeer painting and a leather suitcase bearing the initials WHL3. For the first time in years, the authorities have a lead - with the suitcase and painting both pointing them toward one man.

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.

Twenty years ago, Melanie Stokes was abandoned in a Boston hospital, then adopted by a wealthy young couple. Gifted with loving parents, a doting brother, and an indulgent uncle, Melanie has always considered herself lucky. Until the first cryptic, threatening note arrives: “You Get What You Deserve.” Melanie has no memory of her life before the adoption. Now someone wants her to remember it all - even the darkest nightmare the Stokes family ever faced: the murder of their first daughter.

A young woman is found brutally murdered, and the main suspect is the victim's fiancé, a hideously scarred Iraq War vet known as the Burned Man. But railroad police Special Agent Sydney Rose Parnell, brought in by the Denver Major Crimes unit to help investigate, can't shake the feeling that larger forces are behind this apparent crime of passion. In the depths of an icy winter, Parnell and her K9 partner, Clyde - both haunted by their time in Iraq - descend into the world of a savage gang of rail riders.

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.  

Twenty-eight years ago, Charlotte and Samantha Quinn's happy small-town family life was torn apart by a terrifying attack on their family home. It left their mother dead. It left their father - Pikeville's notorious defense attorney - devastated. And it left the family fractured beyond repair, consumed by secrets from that terrible night. Twenty-eight years later, Charlie has followed in her father's footsteps to become a lawyer herself - the ideal good daughter. But when violence comes to Pikeville again, Charlie is plunged into a nightmare.

Small-town lawyer Bocephus Haynes comes home late one night to find District Attorney General Helen Lewis waiting for him. Her ex-husband has just been killed. She’s about to be arrested for his murder. And she wants Bo to represent her. There’s a lot working against them. Just before his death, Helen’s ex-husband threatened to reveal a dark secret from her past. Bo has been in a tailspin since his wife’s death. 

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.