FBI Agent Adele Sharp is an invaluable asset in bringing criminals to justice as they cross American and European borders, and when bodies begin turning up at brothels around Amsterdam’s red-light district, Adele is called in to investigate. But the seemingly straightforward case soon spirals out of control, and Adele must use every trick at her disposal to piece together the mystery. Who is this killer? Why these victims? And where will he strike next?

In the rough streets of 1920s New York City, 34 year-old Ava Gold, a widower and single mom, claws her way up to become the first female homicide detective in her NYPD precinct. She is as tough as they come, and willing to hold her own in a man’s world. But when a psychotic serial killer unleashes a rampage, murdering young women across the city, Ava will have to search the dark canals of the twisted killer’s mind if she has any hope of hunting him down. 

FBI Special Agent and single mom Laura Frost, 35, is haunted by her talent: a psychic ability which she refuses to face and which she keeps secret from her colleagues. Yet as much as Laura wants to be normal, she cannot turn off the flood of images that plague her at every turn. Vivid flashbacks. Nightmares of killers and their victims. And glimpses of what a killer may do next. 

Paige King, 25, in her PhD residency at a psychiatric hospital for the criminally insane, is summoned urgently by the FBI: Her most notorious patient, a diabolical and elusive serial killer, has escaped. And they need her to help hunt him down. 

Criminal profiler in training Jessie Hunt is sure she's finally put the darkness of her childhood behind her. She and her husband, Kyle, just moved into a Westport Beach mansion. But soon after their arrival, Jessie begins to notice a series of strange developments. The neighbors - and their au pairs - all seem to be hiding secrets. The mysterious yacht club Kyle is desperate to join is rife with cheating spouses. And the notorious serial killer being held at the psychiatric hospital where Jessie is completing her degree seems to know more about her life than is normal - or safe. 

In the cornfields of Nebraska a woman is found murdered, strung up on a pole, the victim of a deranged killer. It doesn't take long for the police to realize a serial killer is on the loose - and that his spree has just begun.

Women are turning up dead on the rural outskirts of Virginia, killed in grotesque ways, and when the FBI is called in they are stumped. A serial killer is out there, his frequency increasing, and they know there is only one agent good enough to crack this case: Special Agent Riley Paige. Riley is on paid leave, recovering from her encounter with her last serial killer, and, fragile as she is, the FBI is reluctant to tap her brilliant mind. Yet Riley, needing to battle her own demons, comes onboard.

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.

When a body is found stuffed into a barrel at a garbage dump, covered in long red lacerations, Detective Jenna Alton and her new deputy, David Kane, rush to the scene. Nothing ever happens in the small American town of Black Rock Falls, so Jenna believes the victim must be one of two recent missing persons, and she fears for the life of the other. Both were strangers to the town, but there's nothing else to link them. Jenna knows someone must have seen something, but no one's talking.

A sister’s worst nightmare. A homicide detective’s destiny. Everybody loves Claire’s little sister, Tina. But only Claire sees the twisted psychopath hiding behind her sister’s angelic face. When Tina is brutally murdered on her 14th birthday and while in Claire’s charge, Claire never forgives herself. And neither does their mother. Twelve years later, more girls turn up dead in Newburgh exactly like Tina. Claire, now a police detective, suspects that her sister’s murderer is still on the prowl.

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.

Five figures gather 'round a shallow grave. They had all taken turns to dig. An adult-sized hole would have taken longer. An innocent life had been taken, but the pact had been made. Their secrets would be buried, bound in blood. Years later a headmistress is found brutally strangled, the first in a spate of gruesome murders that shock the Black Country.

When 12-year-old Isabella Farner disappears, Agent Tori Hunter races to the scene. Witnesses—including her partner’s son, who was biking home with Isabella—saw a man throw her into the back of his blue van and speed away. Terrified that a child she loves like her own might be next, Tori knows every second counts in the hunt for the missing girl. Isabella’s distraught parents insist no one would want to harm their perfect family. But soon a photo of Isabella looking terrified is discovered, holding a copy of today’s newspaper. 

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.