Nancy North and her partner Felix move into a new flat for a fresh start. Nancy is taking her pills, seeing her therapist and avoiding unnecessary stress. But on the first day in the new flat, she hears them again; the mysterious voices that triggered her first episode. It could just be the unfamiliar sounds of water in the pipes, or the screaming baby across the hall, but deep down she knows something more sinister is going on. Her fears are confirmed when the young woman in the downstairs flat, Kira, is found dead. Meanwhile, Detective Inspector Maud O’Connor has misgivings about her colleagues’ investigation. Thy seem intent on closing the case as quickly as possible, but Maud isn’t so quick to discount Nancy’s claims. As tensions reach an explosive breaking point, Maud will stop at nothing to ensure that the truth comes to light.

On the day of Alec Salter’s 50th birthday party, his wife, Charlotte, vanishes. While Alec brushes off her disappearance, their four children --- especially 15-year-old Etty --- grow increasingly anxious. Then Etty and her friend, Morgan, find the body of Morgan’s father, Duncan Ackerley, floating in the river. The police conclude that Duncan and Charlotte were having an affair before he killed her and committed suicide. Thirty years later, Morgan Ackerley returns to the small English village of Glensted with his older brother to make a podcast based on their shared tragedy with the Salters. Stricken with dementia, Alec is entering an elder care facility. But when the Ackerleys ask to interview the Salters, the entire town gets caught up in the unresolved cases. Allegations fly, secrets come to light, and a suspicious fire leads to a murder.

Jude hasn’t seen Liam in years, but when he shows up at her work asking for a favor, she finds she can’t refuse. All Jude has to do is pick Liam up at a country train station --- without telling anyone. So what if she has to lie to her fiancé? Jude is still committed to him and their imminent wedding, even if she and Liam were in love once. She owes him. After the car crash that changed everything years ago, bright, ambitious Jude went to medical school, back on the path she had planned before meeting moody, artistic Liam. Meanwhile, he never fully recovered from the dark stain the accident left on his record. Now he’s gone. When the police show up at the station instead of Liam, Jude realizes that she knows nothing about the man he’s become.

Maybe Tess is overprotective, but passing her daughter off to her ex and his new young wife fills her with a sense of dread. It hurts to see him enjoying married life with someone else. Still, she owes it to her daughter Poppy to make this arrangement work. But Poppy returns from the weekend tired and withdrawn. And when she shows Tess a crayon drawing --- an image so simple and violent that Tess can hardly make sense of it --- Poppy can only explain with the words, “He did kill her.” Jason insists the weekend went off without a hitch. Doctors advise that Poppy may be reacting to her parents’ separation. And as the days go on, even Poppy’s disturbing memory seems to fade. But a mother knows her daughter, and Tess is determined to discover the truth.

When a body is discovered in Okeham, England, Tabitha is shocked to find herself being placed in handcuffs. She’d only recently moved back to her childhood hometown, not even getting a chance to reacquaint herself with the neighbors. How could she possibly be a murder suspect? As Tabitha is shepherded through the system, her entire life is picked apart and scrutinized. But most unsettling, her own memories of that day are a complete blur. From the isolation of the correctional facility, Tabitha dissects every piece of evidence, every testimony she can get her hands on, matching them against her own recollections. But as dark, long-buried memories from her childhood come to light, Tabitha begins to question if she knows what kind of person she is after all. 

London cycle courier Astrid Bell is on her way home one day when her neighbor accidentally knocks her off her bike. Suffering a few bruises, her roommates help her home. The next day, they learn that same neighbor was bludgeoned to death only hours after the accident. Each of them tells the police what little they know and are dismissed. Then a few days later, Astrid is asked to pick up a package from a wealthy woman called Ingrid de Soto. When she arrives, the client is lying in the hall of her luxurious home --- and it’s apparent she’s also been murdered. For the police, it’s more than bad luck. For Astrid and her six housemates, it's the beginning of a nightmare: suspicious glances, bitter accusations, and a growing fear that the worst is yet to come.

When Neve Connolly pays a morning-after visit to her lover, Saul, and finds him brutally murdered, all the lies she has so painstakingly stitched together threaten to unravel. After scrubbing clean every trace of her existence from Saul’s life --- and death --- Neve believes she can return to normal, shaken but intact. But she can’t get out of her head the one tormenting question: What was she forgetting? An investigation into the slaying could provide the answer. It’s brought Detective Chief Inspector Alastair Hitching, and Neve’s worst fears, to her door. But with every new lie, every new misdirection to save herself, Neve descends further into the darkness of her betrayal --- and into more danger than she ever imagined.

A decade ago, psychologist Frieda Klein was sucked into the orbit of Dean Reeve, a psychopath who was obsessed with her. In the years since, Frieda has worked with --- and sometimes against --- the London police in solving their most baffling cases. But now she's in hiding, driven to isolation by Reeve. When a series of murders announces his return, Frieda must emerge from the shadows to confront her nemesis. Criminology student Lola Hayes has tracked Frieda down with a single-minded pursuit: she wants to delve inside the mind of a woman besieged by darkness. But in following every move Frieda makes, Lola is exposing herself to the same terrors --- and the same twisted fixation of a diabolical psychopath.

Lover of London, gifted psychologist, frequent police consultant --- Frieda Klein is many things. And now she's a person of interest in a murder case. A body has been discovered in the most unlikely and horrifying of places: beneath the floorboards of Frieda's house. The corpse is only months old, but the chief suspect appears to have died more than seven years ago. Except as Frieda knows all too well, he's alive and well and living in secret. And it seems he's inspired a copycat. As the days pass and the body count rises, Frieda finds herself caught in a fatal tug-of-war between two killers: one who won't let her go, and another who can't let her live.

A decade ago, 18-year-old Hannah Docherty was arrested for the shocking murder of her family. It was an open-and-shut case, and Hannah has been incarcerated in a secure psychiatric hospital ever since. When psychotherapist Frieda Klein is asked to meet Hannah and give her assessment, she reluctantly agrees. But what she finds horrifies her. Hannah has become a tragic figure, old before her time. And Frieda is haunted by the idea that Hannah might be as much of a victim as her family --- that she might, in fact, be innocent. As Hannah's case takes hold of her, Frieda begins to realize that she's up against someone who will go to any lengths to keep the truth from surfacing --- even kill again.

A bloated corpse turns up in the Thames, throat slashed, and the only clue is a hospital wristband reading Dr. F. Klein. Frieda is taken to see the body and realizes with horror that it is Sandy, her ex-boyfriend. She’s certain that the killer is Dean Reeve --- the man who has never stopped haunting her. But the police think he has been dead for years, and Frieda is their number one suspect. With few options, Frieda goes on the run to save herself and try to uncover the truth.

Frieda Klein learns from her former classmate, Maddie Capel, that Maddie’s teenage daughter, Becky, claims she was raped in her own bed one night while her mother was downstairs. Becky’s story awakens dark memories of an eerily similar incident in Frieda’s own past that she’s been avoiding for decades. When Becky is found hanging from a beam in her bedroom, Frieda seeks out her old high school friends to ask what they remember about the night that prompted Frieda to leave town for good. But confronting the ghosts of the past turns out to be more dangerous than she ever expected.

Ruth Lennox is found dead in a pool of her own blood. Detective Chief Inspector Karlsson can’t piece together a motive and calls in psychotherapist Frieda Klein, hoping her talents will offer a new angle on the case. When it emerges that Ruth was hiding a scandalous secret, her family closes ranks. Then a patient’s chance remark sends Frieda down a dangerous path that seems to lead to a serial killer who has long escaped detection.

A London social worker makes a routine home visit only to discover her client, Michelle Doyce, serving afternoon tea to a naked, decomposing corpse. With no clues as to the dead man’s identity, Chief Inspector Karlsson again calls upon Frieda Klein for help. Frieda discovers that the body belongs to Robert Poole, con man extraordinaire. But she can’t shake the feeling that the past isn’t done with her yet.

The abduction of a five-year-old provokes a national outcry and a desperate police hunt. When his face is splashed over the newspapers, psychotherapist Frieda Klein can’t ignore the coincidence: one of her patients has been having dreams in which he has a hunger for a child.