After a student choir’s practice session at a Helsinki villa turns deadly, Detective Maria Kallio finds herself in the middle of the action - and her first murder case. Someone in the group wanted playboy Tommi Peltonen dead, but that’s one song these suspects refuse to sing. Behind the choir’s jovial facade lies bitter passion, and the victim’s seemingly perfect life hid a host of sins that made him a target of almost everyone in the villa. As a young female - and a redhead to boot - Maria knows that solving this case will help her overcome her perceived shortcoming in the eyes of her colleagues.

On a hot July morning on Sweden's idyllic vacation island of Sandhamn, a man takes his dog for a walk and makes a gruesome discovery: a body, tangled in fishing net, has washed ashore. Police detective Thomas Andreasson is the first to arrive on the scene. Before long, he has identified the deceased as Krister Berggren, a bachelor from the mainland who has been missing for months. All signs point to an accident - until another brutalized corpse is found at the local bed-and-breakfast.

Dr. Annabelle Schwartzman has finally found a place to belong. As the medical examiner for the San Francisco Police Department, working alongside homicide detective Hal Harris, she uncovers the tales the dead can't tell about their final moments. It is a job that gives her purpose - and a safe haven from her former life at the hands of an abusive husband. Although it's been seven years since she escaped that ordeal, she still checks over her shoulder to make sure no one is behind her.

Rock climbers can't afford to make careless mistakes. But Detective Inspector Nick Dixon's former climbing partner, Jake Fayter, died doing just that. Or so it seems. Dixon suspects foul play, but his only leads are unreliable accounts of something odd happening in Cheddar Gorge seconds before Jake fell.

When a six-year-old girl is found dead, hanging from a tree, the only clue the Oslo Police have to work with is an airline tag around her neck. It reads, 'I'm travelling alone'. Holger Munch, veteran police investigator, is immediately charged with reassembling his homicide unit. But to complete the team, he must convince his erstwhile partner, Mia Krüger - a brilliant but troubled investigator - to return from the solitary island where she has retreated with plans to take her own life.

Twenty years ago Emily Mills's father was murdered, and she found his body hanging in the backyard. Her younger sister, Madison, claims she was asleep in her room. Her older sister, Tara, claims she was out with friends. The tragedy drove their mother to suicide and Tara to leave town forever. The killer was caught. The case closed. Ever since, Emily and Madison have tried to forget what happened that night - until an eerily similar murder brings it all back. 

After saving her three-year-old daughter from a car-jacking, off-duty police detective Jocelyn Rush ends up in the ER. The last person she expects to run into is Anita Grant, former prostitute and an old acquaintance from Jocelyn's days on patrol. In spite of her obvious injuries - mutilated hands and feet - Anita refuses to talk about what happened. Reluctantly, Jocelyn backs off, and Anita's case goes to Philadelphia's Special Victims Unit. Before long, Jocelyn is pulled into the SVU's investigation.

For three years, Detective Jude Fontaine was kept from the outside world. Held in an underground cell, her only contact was with her sadistic captor, and reading his face was her entire existence. Learning his every line, every movement, and every flicker of thought is what kept her alive. After her experience with isolation and torture, she is left with a fierce desire for justice - and a heightened ability to interpret the body language of both the living and the dead.

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.

Not everyone who's missing is lost. When two teenage girls go missing along the Irish border, Paula Maguire has to return to the hometown she left years before. Swirling with rumour and secrets, the town is gripped by fear of a serial killer. But the truth could be even darker. Not everyone who's lost wants to be found. Surrounded by people and places she tried to forget, Paula digs into the cases as the truth twists further away. What's the link with two other disappearances from 1985? And why does everything lead back to the town's dark past - including the reasons her own mother went missing years before?