Adopted when she was only days old, Ivy Hon knows little about her lineage. But when she’s stricken with a mystery illness, the results of a genetic test to identify the cause attract the FBI. According to Ivy’s DNA, she’s related to the Full Moon Killer, who has terrorized the Pacific Northwest for decades. Ivy is the FBI’s hope to stop the enigmatic predator from killing again. 

Shayna Darby is finally coming to terms with her parents’ deaths when she’s delivered another blow. The body of her estranged twin sister, Angela - the possible victim of a serial killer - has been pulled from the Seine. Putting what’s left of her life on hold, Shayna heads to Paris. But while cleaning out Angela’s apartment, Shayna makes a startling discovery: a coded message meant for her alone... Alive. Trust no one.

Fiona and Violet Seng were just children when their family’s Cessna crash-landed in the Washington wilderness, claiming the lives of their parents. For twelve harrowing weeks, the girls fended for themselves before being rescued. Twenty-five years later, they’re still trying to move on from the trauma. Fiona repurposes it into controversial works of art. Violet has battled addiction and failed relationships to finally progress toward normalcy as a writer. The estranged sisters never speak about what they call their Alone Time in the wild.

Ten years after her boyfriend Mitch’s mysterious disappearance, Rebecca finally learns the truth about what happened. When he finally returns, a happy ending appears within their grasp but there is no escape from the past. And Arthur, Rebecca’s friend who has formed an unhealthy obsession with her, has no intention of letting her go. When Arthur realises that Mitch is the only person standing in the way of his happiness, his thoughts turn to murder.

Psychology student Olivia Eriksen’s family is notorious among true-crime buffs. Faced with a legacy of psychopathy that spans generations, Olivia has spent much of her academic life trying to answer one chilling question: Nature or nurture? Although she’s kept a safe distance from her blood relatives for years, Olivia agrees to attend a weekend reunion. After all, her fiancé is eager to meet his future in-laws, and the gathering may give her a chance to interview her elusive grandfather about the family traits.

Psychologist and criminologist Dr. Gretchen White is a specialist in antisocial personality disorders and violent crimes. She’s helped solve enough prominent cases for detective Patrick Shaughnessy that her own history is often overlooked: Gretchen is an admitted sociopath once suspected of killing her aunt. Shaughnessy still thinks Gretchen got away with murder. It’s not going to happen again. 

When two young girls disappear from their primary school, the village of Heighington is put on high alert—and not for the first time. Called in to investigate, Detective Karen Hart is sure that parallels with a previous disappearance are anything but coincidental. DS Hart is still reeling from a case she tried and failed to solve eighteen months ago, when a young woman vanished without a trace. She’s no nearer to the truth of what happened to Amy Fisher, but with two children missing now, too, the stakes have never been higher.

When a young red-haired woman is found brutally murdered in downtown Chicago, one detail stands out: the red lipstick encircling her wrists and ankles. Detective Harriet Foster is on the case, even though she’s still grieving the sudden death of her partner. As a Black woman in a male-dominated department, Foster anticipates a rocky road ahead acclimating to a new team—and building trust with her new partner isn’t coming easily. After another victim turns up with the same lipstick markings, Foster suspects she’s looking for a serial killer. 

It seems like an open-and-shut case for FBI special agent Lucy Thorne when Eliza Cook walks into the field office. The teenage girl confesses to murdering a young boy. Disturbingly composed, she reveals chilling details only the killer could know. Beyond that Eliza doesn't say another word, leaving a vital question met with dead silence: Why did she do it?

Like any mother, Chrissie wants to protect her family. She would do anything to keep them safe. So when a mysterious stranger turns up at her door, offering to prevent the deaths of the people she loves, it sounds too good to be true. The only problem: she must choose someone to die in their place. A substitute. When her daughter Holly has a terrible accident, Chrissie has no option but to enter the programme. In that horrifying moment, she would do anything to save her.

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.

On a humid summer day in Alabama, a mayor’s wife turns up brutally murdered under a railroad bridge. Standing next to her body is fourteen-year-old Mason Hill, the autistic son of former Miss USA Genevieve Hill. The locals are quick to level their verdict on young Mason: he did it. The town detective calls in local autism expert Casey Walker to consult on the case. At first, Casey tries to keep an open mind. But the more time she spends with Genevieve, the more her unease grows, and she suspects that Genevieve is doing more than just protecting her son.

DI Sheridan Holler is used to solving crimes on Liverpool’s streets, but after a decayed corpse turns up in a cemetery, she finds herself reopening not one but two cold cases. Seven years earlier, two women were gunned down and the only suspect, small-time drug dealer John Lively, was never seen again. Case closed. Until the body in the cemetery is identified as his.

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.

When secretary Annie Parkes is snatched from the street outside of her workplace, David Kane is tasked with finding her. Strong, highly skilled, and secretive, he’s a loner and an outsider; the only man the military trust to find Annie before her kidnappers make good on their promise to kill her. But as Kane pulls Annie from a derelict building, gunshots ringing through the deserted streets around them, he realizes rescuing her is just the beginning. He needs to keep her close to find out who is behind her capture, and to keep her safe.