Siglufjörður: an idyllically quiet fishing village in Northern Iceland, where no one locks their doors - accessible only via a small mountain tunnel. Ari Thór Arason: a rookie policeman on his first posting, far from his girlfriend in Reykjavik - with a past that he’s unable to leave behind.

The first the police know of the crime is when clips are sent from the victim's Snapchat account, showing her begging for forgiveness. The CCTV at the cinema where she was working show her being dragged into the night by a masked killer. When the body is found, it is marked with a number 2...Detective Huldar joins the murder investigation, bringing child psychologist Freyja on board to help question the murdered teenager's friends. Soon, they uncover that Stella was far from the angel people claim: a relentless bully, she made life miserable for those around her.

Shortly before Christmas, Chief Inspector Hanne Wilhelmsen is called to the scene of multiple murders. Four people are found shot dead at the home of the wealthy Stahlberg family. Three of the dead are members of the family, and the fourth victim is an undistinguished author, seemingly out of place. As Hanne and her longtime police partner, Billy T., investigate, they unearth many motives for the murders. But Hanne doesn't believe that the full story has been revealed.

It has been 11 years since Hanne Wilhelmsen's life was forever changed by an assault that left her wheelchair bound. Now Hanne's self-imposed exile is nearing its end. When Oslo comes under attack from Islamic extremists in a series of explosions, the city is left reeling. A militant group claim responsibility, but the Norwegian police force doubt the group's very existence. The unfolding drama is brought to Hanne's door by her former partner, Billy T, who is convinced that his son, Linus, is involved in the recent events.

In 2001, three-year-old Dina is killed in a tragic car accident. Not long thereafter Dina's mother dies under mysterious circumstances, and Dina's father, Jonas, is convicted of her murder. In 2016, the cold case ends up on the desk of Detective Henrik Holme, who tries to convince his mentor Hanne Wilhelmsen that the father might have been wrongly convicted. Holme and Wilhelmsen discover that the case could be connected to the suicide of an eccentric blogger as well as the kidnapping of the grandson of a EuroJackpot millionaire.

Selma Falck's personal life and career as a lawyer have hit rock bottom. That is until Hege Chin Morell - Norway's best female skier - approaches her desperate to overturn a doping charge. With two months to the Winter Olympics, Selma faces the seemingly almost impossible task of clearing Morell's name. However, when a male skier is found dead after a training accident, it becomes clear to Selma that there is something more serious at risk. Encountering corruption, hidden enmity and shady connections, the pattern of recent crimes and ancient sins becomes undeniable.

When former high-powered lawyer turned PI Selma Falck is shot and her oldest friend, a junior MP, is killed in a sniper attack, everyone - including the police - assume that Selma was the prime target. But when two other people with connections to the MP are also found murdered, it becomes clear that there is a wider conspiracy at play. As Selma sets out to avenge her friend's death and discover the truth behind the conspiracy, her own life is threatened once again. Only this time, the danger may be closer to home than she could possibly have realised.

When single mother Maríanna disappears from her home, leaving an apologetic note on the kitchen table, everyone assumes that she's taken her own life...until her body is found in the Grábrók lava fields seven months later, clearly the victim of murder. Her neglected 15-year-old daughter, Hekla, has been placed in foster care, but is her perfect new life hiding something sinister?

A chilling note predicting the deaths of six people is found in a school's time capsule, 10 years after it was buried. But surely, if a 13-year-old wrote it, it can't be a real threat.... Detective Huldar suspects he's been given the investigation simply to keep him away from real police work. He turns to psychologist Freyja to help understand the child who hid the message. Soon, however, they find themselves at the heart of another shocking case.

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.

On a jagged, bleak lava field just outside Reykjavik stands the Gallows Rock. Once a place of execution, it is now a tourist attraction. Until this morning, when a man was found hanging from it. The nail embedded in his chest proves it wasn't suicide. But when the police go to his flat, a further puzzle awaits: a four-year-old boy has been left there. He doesn't seem to have any link with the victim, his parents cannot be found and his drawings show he witnessed something terrible.

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. 

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....

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.

At the end of a deadly bear hunt across the wilderness of Northern Sweden, the successful hunters are shaken by a grisly discovery. Across in Kurravaara, a woman is murdered with frenzied brutality: crude abuse scrawled above her bloodied bed, her young grandson nowhere to be found. Only Rebecka Martinsson sees a connection.