When two teenagers - Johannes and Mari - are found murdered inside their school, in the small Norwegian village of Fredheim, the finger is soon is pointed at 18-year-old Even, whose relationship with Mari ended just before she died. Mari was writing a story for the school newspaper about Even and his dad, who died in a car accident 10 years earlier. But was it really an accident? And had Mari uncovered information that someone was willing to commit murder to protect? 

A solitary tent is found to contain the body of a half-buried woman. She’s been stoned to death. There are lash marks across her back. One of her hands has been cut off. Two years earlier Internet reporter Henning Juul lost his son, Jonas, in a domestic fire. As he returns to work, physically and emotionally scarred, Henning struggles to escape this past and to be taken seriously again as a reporter.

When a body of a woman is discovered at a lighthouse in the Icelandic town of Akranes, it soon becomes clear that she’s no stranger to the area. Chief Investigating Officer Elma, who has returned to Akranes following a failed relationship, and her collegues Sævar and Hörður commence an uneasy investigation which uncovers a shocking secret in the dead woman’s past that continues to reverberate in the present day.

From a young age, 28-year-old Embla Nystrom has been plagued by chronic nightmares and racing thoughts, but she has learned to channel most of her anxious energy into her position as Detective Inspector in the mobile unit in Gothenburg, Sweden, and into sports. A talented hunter and prize-winning Nordic welterweight, she is glad to be taking a vacation from her high-stress job to attend the annual moose hunt with her family and friends. But when Embla arrives at her uncle's cabin in rural Dalsland, she sees an unfamiliar face has joined the group.

Reykjavík Detective Gunnhildur Gísladóttir tries not to believe in ghosts. But when Helgi, one of her team, is certain he's seen a man who had been declared dead more than 15 years ago, she reluctantly gives him some unofficial leeway to look into it. Has the not-so-dead man returned from the grave to settle old scores, or has he just decided to take a last look around his old haunts?

Falkenberg, Sweden. The mutilated body of talented young jewellery designer, Linnea Blix, is found in a snow-swept marina. Hampstead Heath, London. The body of a young boy is discovered with similar wounds to Linnea's. Buchenwald Concentration Camp, 1944. In the midst of the hell of the Holocaust, Erich Hebner will do anything to see himself as a human again. Are the two murders the work of a serial killer, and how are they connected to shocking events at Buchenwald?

When a little girl disappears a few weeks before Christmas, suspicion falls on the last person she was seen with: the mentally disabled teenage boy who gave her a ride home after school. Complicating the matter is the fact that detectives can hardly get a word out of him. When a second child disappears and a police officer is found dead, tensions in the small town of Strömstad reach an all-time high.

After four years behind bars notorious serial killer Thomas Kerr is ready to talk. And Chief Inspector William Wisting has been waiting to listen. Kerr has finally agreed to lead the police to his final victim's grave. But the expedition goes horribly wrong after his escape deep into the Norwegian forest. Wisting must launch a frantic search to find this cold-blooded killer before he strikes again. But the body of another woman, killed weeks before, has been found. Murdered in the same way as Kerr's victims.

Stavern, 1983. After a brutal robbery, a young policeman named William Wisting is edged off the investigation by more experienced officers, but soon he is on another case that has not even been recognised as murder. Forgotten in a dilapidated barn stands a bullet-riddled old car, and it looks as if the driver did not get out alive. This case will shape William Wisting as a policeman and give him insight that he will carry with him for the rest of his career.

When a dead man is lifted from the freezing waters of Oslo Harbour just before Christmas, Detective Lena Stigersand's stressful life suddenly becomes even more complicated. Not only is she dealing with a cancer scare, a stalker and an untrustworthy boyfriend, but it seems both a politician and Norway's security services might be involved in the murder. With her trusted colleagues, Gunnarstranda and Frølich, at her side, Lena digs deep into the case and finds that it not only goes to the heart of the Norwegian establishment, but it might be rather too close to her personal life for comfort.

Twenty-four years ago Katharina Haugen went missing. All she left behind was her husband, Martin, and a mysterious string of numbers scribbled on a piece of paper. Every year on October 9th Chief Inspector William Wisting takes out the files to the case he was never able to solve. Stares at the code he was never able to crack. And visits the husband he was never able to help. But now Martin Haugen is missing too. 

You need clues. You need time. You need a motive. You won’t have any of them.When a whole family is murdered in Stockholm, Detective Inspector Joona Linna knows there is only one person who can help find the perpetrator. Erik Maria Bark, retired hypnotist, is called in to work with Josef Ek, a fifteen-year-old boy who witnessed the brutal murder of his family.Following a series of accusations by his patients, Erik is reluctant to return to his craft but makes an exception for Joseph Ek

It's December in the quiet Swedish town of Kymlinge, and the Hermansson family are gathering to celebrate father Karl-Erik and eldest daughter Ebba's joint landmark birthdays. But beneath the guise of happy festivities, tensions are running high, and it's not long before the night takes a dark and unexpected turn....

On a summer's day, Johanne Vik arrives at the home of her friends Jon and Ellen Mohr and is greeted by a scene of devastation: their young son, left unattended, has tragically fallen to his death. Meanwhile, Oslo is under attack. An explosion has torn the city apart, and newly qualified police officer Henrik Holme is the only one available to attend the Mohr household. As Holme investigates, he casts doubt on the claim that the death was a tragic accident and calls upon Johanne's profiling expertise to understand what really happened. 

The only witness to a shocking murder is the victim's 10-year-old daughter, Margret. The police turn to the Children's House for their expertise in childhood trauma. The manager, Freyja, doesn't much like the police - especially the detective in charge, Huldar. But she does want to help them protect Margret. And when more people die - their murders heralded by strange messages, texts, and strings of numbers - they will have to work together to crack the riddle before they become targets themselves.