Fifteen years ago, a serial killer was on a rampage murdering young women in Middlehampton. Then, suddenly, the killings stopped, and the murderer was never found… So when the body of another young woman is found bearing the twisted killer’s unique hallmark—the overpowering stench of lavender and an origami heart—DS Kat Ballantyne knows this can only mean one thing: the killer is back.

As bogus corruption charges loom over her, DS Kat Ballantyne finds herself deskbound and stuck with cold cases. Her hated boss, DI Carver, has given her just one week to explain how £50,000 found its way into her bank account. If she can’t, she’ll be lucky to have a desk at all. Then a close friend calls her from a murder scene, claiming to have strangled a local gangster’s wife. Kat has no choice but to disobey orders and investigate. Despite overwhelming forensic evidence supporting her friend’s confession, something still doesn’t add up…

Barely a month since his promotion to Inspector, DI Ford is called in to investigate the murder of a young nurse and her son in a small flat in Salisbury. There are few clues, and no apparent motive, but Ford can sense that there's a serial killer at work. After all, he knows from brutal personal experience how killers cover their tracks.... It's been six years since Ford lost his wife in a climbing accident - an accident he caused. He is desperate to keep the truth hidden, especially from his son, Sam.

Detective Inspector Stella Cole was a rising star in London’s Metropolitan Police. Then a hit-and-run driver killed her husband, Richard, a human rights lawyer. Grief drove her to booze and pills. Back at work after a year’s compassionate leave, Stella secretly re-investigates his death and begins to suspect a cover-up. Freelance journalist Vicky Riley was working with Richard to expose corruption buried deep inside the legal system. Unaware that powerful people are out to stop her, she contacts Stella.

In Liverpool, a woman inexplicably leaps to her death. The following morning, two bodies are found on nearby Crosby Beach: a woman tied to a statue, and a man buried up to his neck and left to drown. When a nine-month-old murder case is reopened, DI Sheridan Holler is shocked to uncover family connections between the victim, Daniel Parks, and the three unexplained deaths. With Daniel’s body still missing and the number-one suspect cleared of the crime, Holler’s cold case suddenly becomes a major murder investigation.

In a cave near Weston, potholers discover what they think are human remains. The bones are identified as belonging to Hugo Latchford, a boy who went missing a decade ago, and whose parents belonged to a quasi-religious cult masquerading as environmental activists. It’s not long before rumours that he was sacrificed in a midsummer ritual resurface. Returning to duty from maternity leave, DI Louise Blackwell finds herself leading the investigation, soon discovering that Hugo’s parents are still alive and the cult very much still active.

The double murder of a married couple in a small Washington town draws FBI forensic linguist Raisa Susanto into an investigation that mirrors a decades-old crime. Twenty-five years ago—to the day—Alex Parker murdered his parents, then took his own life, leaving behind a note admitting everything. Raisa, paired with forensic psychologist Callum Kilkenny, uses her skills to read between the lines. Especially now that paranoid postings on a conspiracy thread suggest that Alex was a victim himself.

After the mysterious disappearance of her fiancé, Alma Hughes moves to a remote island in the North Atlantic, where she hopes to weather her grief and nurture her ailing dog. But the strange town of Violette has mysteries as well. Townsfolk say that the radio tower overlooking their town broadcasts messages through their home appliances, their dreams, even the sea itself. When lightning strikes the tower, illuminating the sky in a brilliant flash, Alma finds herself caught in the unexplainable aftermath of one of Violette’s deadliest storms.

When a boy leaps to his death from a bridge in the northern town of Umeå, Sweden, police discover drugs scattered in the snow near his body. The town has seen a dramatic increase in narcotic use among its youth, but nobody knows where the pills are coming from.

A family outing to Tattershall Castle comes to a chilling end when eleven-year-old Tommy Burton disappears without a trace in broad daylight. All that remains in his place is a small blue teddy bear. DS Karen Hart and her team are called in to investigate the unusual circumstances—but for DI Morgan the crime scene is eerily familiar.

When Jonathon Roth and his family are invited by their neighbors, the Beasleys, to join them at a luxury retreat in Cozumel, who can refuse? It’s the perfect winter getaway. Relaxing on the beach, gourmet food, sightseeing, and free accommodations. But if it sounds too good to be true, it is. Villa Sara de Calakmul, owned by mysterious tycoon Jacob Calakmul, is more isolated compound than private resort. Armed guards patrol the jungle perimeters. Pictures of previous guests—long disappeared—adorn the walls.

Someone is killing old spies. Retired and forgotten, these relics from the Cold War are being removed—quietly and brutally. And when “Section D” MI5 agent Tom Marlowe, on medical leave after a botched mission, learns his old mentor is one of the murdered ex-agents, he starts an investigation that threatens to cost him his career, his freedom…and even his life.

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 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”.

When patrolman Brandon Hall comes upon a broken-down car on a Colorado highway, he finds a young girl in a bloodied nightgown at the wheel. In the back seat, the brutalized body of a teenage boy. The girl will say only one word: Hurt. When the girl is admitted to the hospital, the doctor on call is Brandon’s ex-wife, Olivia Blake. For Olivia and Brandon, the traumatized Jane Doe opens a floodgate of memories. It’s been four years since they shared their own tragedy—the unsolved disappearance of their eight-year-old daughter, Carly, and the end of their marriage.