He promised to kill her. One night four years ago, Leah Carson's husband almost succeeded. Philip stabbed her 23 times before fleeing. The police are sure he's dead. But fear won't let Leah believe it.

After multiple women go missing, Agent Melina Shepard of the Tennessee Bureau of Investigation makes the impulsive decision to go undercover as a prostitute. While working the street, she narrowly avoids becoming a serial killer’s latest victim; as much as it pains her to admit, she needs backup. Enter lone wolf FBI agent Jerrod Ramsey. Stonewalled by a lack of leads, he and Melina investigate a scene where a little girl has been found abandoned in a crashed vehicle.

Fourteen years ago, Kaitlin Roe was the lone witness to the abduction of her cousin Gina. She still remembers that lonely Virginia road. She can still see the masked stranger and hear Gina’s screams. And she still suffers the guilt of running away in fear and resents being interrogated as a suspect in the immediate aftermath. Now Kaitlin has only one way to assuage the pain and nightmares—by interviewing everyone associated with the unsolved crime for a podcast that could finally bring closure to a case gone cold.

In death, they are purified. Holding his victims under water, he washes away their sins as they struggle for their last breath. Then he stakes their bodies to the ground, exposing them for what they really are: witches. No one knows about defence attorney Charlotte Wellington's murdered sister, or about her childhood spent with the carnival that's just arrived in town. For Charlotte, what's past is past. But others don't agree. And as a madman's body count rises, she and Detective Daniel Rokov are drawn into a mission that's become terrifyingly personal.

Special Agent Macy Crow is a survivor. After a vicious hit-and-run nearly kills her, she gets right back to work, and now she’s gunning for a spot on the FBI’s elite profiling team. As an audition, she offers to investigate the recently discovered bones of Tobi Turner, a high school girl who disappeared fifteen years ago. While investigating with local sheriff Mike Nevada, a former colleague and onetime lover, Macy discovers a link between Tobi’s case and several others that occurred around the same time as her disappearance.

At the grisly murder scene of a teen prostitute, Virginia state trooper Riley Tatum's past roars back to haunt her. When she was a teenage runaway, she was kidnapped, drugged, and left unconscious on the streets. She has no memories of what happened, only strange recurring dreams of two men playing cards. Former FBI agent Clay Bowman, Riley's old flame, is Shield Security's newest member. He's plagued by the unsolved case of a serial killer nicknamed the Shark who murdered girls as part of a sadistic poker game.

FBI special agent Zoe Spencer uses skeletal remains to recreate the faces of murder victims through sculpture. Though highly scientific, the process is also sensitive and intimate; she becomes attached to the individuals she identifies, desperate to find justice for each. As Zoe examines old remains, she sees a teenage girl looking back at her - the victim in a cold case from over a decade ago. 

Austin homicide detective Jordan Poe is hunting a serial killer she fears is the same man who assaulted her sister, Avery, two years ago. The details line up: the victims are the same age, same type, dead by the same grim MO. Luckily Avery survived. But the terrible memories linger, making Jordan more determined than ever to stop this monster in his tracks.

Forensic psychologist and single mother Ann Bailey has joined forces with Montana Highway Patrol officer Bryce McCabe. An expert in untangling the motives of depraved minds, Ann is tasked to help solve the mystery of two murdered women doused with gasoline and set aflame. It’s not hard for Ann to be reminded of the charismatic Elijah Weston, who served a decade in prison for arson - a crime that nearly cost Ann her life. Elijah may have been exonerated, but the connection to these rage killings is impossible for Ann to ignore.

Trauma victims are not new to medical examiner Faith McIntyre, but this one is different. The unconscious woman clinging to life after a hit and run is FBI agent Macy Crow. What the woman from Quantico was doing in a dark alley after midnight is just one mystery. The other is more unsettling: Macy is Faith’s mirror image - the twin sister she never knew she had. 

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.

Twin sisters Marisa and Clare Stockton were sixteen when Clare’s body was found in Virginia’s James River. No arrests were made. Fourteen years later, Marisa’s friends and dedicated career as a photographer help her to cope with the open wound of the past. But Marisa still feels the hurt—and the unsolved murder isn’t the only thing haunting her. A recent car crash has erased ten days of Marisa’s memories—a black hole leading up to the accident that’s left her disoriented.

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”. 

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.

While fighting in Afghanistan, Major Grant Barrett receives devastating news: his brother and sister-in-law have been murdered in Scarlet Falls, the sleepy suburb of Grant's youth. Emotionally scarred from war, the career soldier returns home on emergency leave to temporarily care for his orphaned nephew and niece. But when someone tries to kidnap the kids and their teenage babysitter, Grant knows it's not a random act... and neither were the murders.