On the muddy banks of the Calumet River, a body has been found posed next to a series of mysterious glyphs and bearing wounds from a ritualistic slaying. Chicago detective Addie Bisset knows only one man who can decipher the message left by the killer: her friend Dr. Evan Wilding. A brilliant forensic semiotician, Evan decodes the etchings as Viking Age runes. They suggest either human sacrifice or righteous punishment. But to what god? And for what sins? Only one thing is clear from the disturbing runic riddles: there are more victims to come.

A young woman is found brutally murdered, and the main suspect is the victim's fiancé, a hideously scarred Iraq War vet known as the Burned Man. But railroad police Special Agent Sydney Rose Parnell, brought in by the Denver Major Crimes unit to help investigate, can't shake the feeling that larger forces are behind this apparent crime of passion. In the depths of an icy winter, Parnell and her K9 partner, Clyde - both haunted by their time in Iraq - descend into the world of a savage gang of rail riders.

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. 

July 1940. As the Battle of Britain begins, the women of the Air Transport Auxiliary carry out the dangerous task of ferrying warplanes to RAF airbases. But for the ATA detachment sent to the base at Scotney, it’s not only in the skies that they’re a target—it seems a killer is stalking them on the ground. On the day pilot Lizzie Hayes arrives in the quiet village, one of her new comrades is found murdered. One of the few women in Britain with a psychology PhD, Lizzie thinks she can use her skills to help identify the killer, but DI Jonathan Kember isn’t convinced.

After years of dancing in Mumbai’s bars, Tara Mondal was desperate for a new start. So when a client offered her a life-changing payout to indulge a harmless, if odd, fantasy, she accepted. The setup was simple: wear a blue-sequined saree, enter a crowded railway station, and escape from view in less than three minutes. It was the last time anyone saw Tara. 

It’s the night shift worker who finds them. Huddled in a hospital store cupboard is elderly Edith Higgins. Knifed to death. Sitting behind her is Staff Nurse Lily Frampton, a scalpel clasped in her blood-soaked hand. No one can understand why this kind-hearted, dedicated nurse would brutally murder a frail patient she’s spent months caring for. That same day, mild-mannered schoolteacher Rod Black is found surrounded by the battered bodies of his pupils. Why would a well-respected teacher beat five schoolboys to death?

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.

Special Agent Constant Marlowe is tasked with taking over the investigation of an obsessed serial killer trolling the small town of Clark Valley in the quiet—and eerie—plains of the Midwest. Two female victims in quick succession, the same brutal MO, and every indication that victim number three is only days away. Also in the killer’s scope is Constant herself. When she interviews a local family who may be potential witnesses, she leads the devil to their doorstep, throwing their lives into chaos.

Investigative crime journalist Signe Gates’s life became a nightmare the day she was kidnapped and drugged. After forty-eight missing hours, she woke to a blur of unsettling memories and a warning from her unknown abductors: tell anyone what happened and they’ll die. They’ve already proved they will deliver on that threat. For two years, Signe has been haunted by what she knows she did and terrified of what else could be buried in her memories.

After three decades in counterintelligence, Brad Trasker is retired, disillusioned, and dealing with a tragic loss. Spy games are behind him until he attends the launch of a next-generation aircraft. When the project of innovative aerospace CEO Kylie Connor explodes on the tarmac—nearly killing her in the process—Trasker is pulled back into the line of fire. The mystery of the sabotage quickly deepens.

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.

A small white plane hurtles from the sky, vanishing into the wilderness. Hiker Maggie Roby watches its final descent, certain that no one could have survived. But to her shock, a fifteen-year-old girl emerges from the wreckage, wounded but miraculously, impossibly alive. Maggie approaches with trepidation; she has secrets of her own, a past she can’t escape. Saving the girl means risking her future, but she can’t just abandon her, can she?

When human bones are found beneath an old chapel in the woods, evidence suggests the remains could be linked to the decades-old case of missing teen Annalise Jansen. Homicide detective Jane Munro—pregnant and acutely attuned to the preciousness of life—hopes the grim discovery will finally bring closure to the girl’s family. But for a group of Annalise’s old friends, once dubbed the Shoreview Six by the media, it threatens to expose a terrible pledge made on an autumn night forty-seven years ago.

When eight-year-old Kathy Stone turns up on the side of the road a year after her abduction, the world awaits her harrowing story. But Kathy doesn’t say a word. Traumatized by her ordeal, she doesn’t speak at all, not even to her own parents. Child therapist Robin Hart is the only one who’s had success connecting with the girl. Robin has been using play therapy to help Kathy process her memories. But as their work continues, Kathy’s playtime takes a grim turn: a doll stabs another doll, a tiny figurine is chained to a plastic toy couch.

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.