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. 

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.

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.

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.

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.

Legal investigator Finley O’Sullivan searches for evidence the police overlooked, wading through secrets, lies, and betrayal to find answers. With the unsolved murder of her husband still very much on her mind, Finley must confront her own personal trauma on a daily basis. Lies are part of her livelihood, but they’re also the reason she can’t get justice for the man she loved. When a man imprisoned for murder recants his confession, claiming he cleaned up the mess for his girlfriend—the victim’s own daughter—Finley takes on the case.  

When a body is discovered, bled dry on a beach, the sleepy seaside town of Weston-super-Mare wakes up to a nightmare. For Detective Inspector Louise Blackwell, recently transferred to the town she last saw as a child, it’s her first case on the job. The victim - Veronica Lloyd, an elderly volunteer at a local church - has puncture wounds to her hands. When a priest is found killed in a nearby church in a similarly grisly condition, it becomes clear that Blackwell is dealing with a righteous and bloody murderer. But the victims aren’t random.

When Maggie’s husband, Will, is shot dead in their London home, she thinks he is the victim of a burglary until the police tell her the shocking news that Will was the one who pulled the trigger. Maggie is consumed with grief and questions. Will wasn’t suicidal. He had so much to live for.

When a young boy discovers the body of a woman beneath a thick sheet of ice in a South London park, Detective Erika Foster is called in to lead the murder investigation. The victim, a beautiful young socialite, appeared to have the perfect life. Yet when Erika begins to dig deeper, she starts to connect the dots between the murder and the killings of three prostitutes, all found strangled, hands bound, and dumped in water around London.

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.

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”.

On the day Stockholm police officer Hanna Ahlander’s personal and professional lives crash, she takes refuge at her sister’s lodge in the Swedish ski resort paradise of Åre. But it’s a brief comfort. The entire village is shaken by the sudden vanishing of a local teenage girl. Hanna can’t help but investigate, and while searching for the missing person, she lands a job with the local police department. There she joins forces with Detective Inspector Daniel Lindskog, who has been tasked with finding the girl. Their only lead: a scarf in the snow. 

Ex-crime reporter Leonard Blaylock spends his days on an unusual hobby, developing strangers’ forgotten and discarded rolls of film. He loves the small mysteries the photographs reveal to him. Then Leonard finds something no one would ever expect, or want, to see captured on film—the murder of a young woman. But that’s impossible, because the woman is already dead. Leonard was there when it happened five years earlier.

Twenty years ago, in the seaside town of Galveston, Texas, Annie Randall took her dog for a walk. The dog returned. Annie did not. When her body was found, cruelly broken and posed like a runner, there was only ever one suspect: Annie’s husband, Frank. Now he’s served his time and come home–but the locals won’t let him forget. Especially when there’s a new ‘running girl’ murder…

Quitting her job as a high school science teacher to join the Seattle Police Department was an easy decision for Tracy Crosswhite. Years earlier, what should have been one of the happiest days of her life instead became her worst nightmare when her younger sister, Sarah, disappeared. After the murder trial, while her family disintegrated, Tracy turned her heartbreak and her lingering questions into a passion for justice.