Together with her one-year-old daughter, Maja, single mother Sofie Lund moves into the house she inherited from her grandfather. Sofie has such painful memories that she has had every trace of the old man removed - every trace but a locked safe that has been bolted to the basement floor. Inside the safe Sofie finds something shocking that will also become crucial evidence in a case that has plagued Inspector William Wisting for a long time. To follow this lead, though, he must cut across important loyalties and undermine confidence in the police force.

The summer cottages are closed, and peace is settling over the coast of Vestfold, but the autumn fog conceals evil deeds. Ove Bakkerud’s cottage is ransacked by burglars, and next door he discovers the body of a man who has been beaten to death. Police Inspector William Wisting is uneasy; the desperation he sees in this latest murder is troubling. Meanwhile dead birds are dropping from the sky.

Seventeen years ago William Wisting led the investigation into one of Norway's most notorious criminal cases, the murder of young Cecilia Linde. When it is discovered that evidence was falsified, he is suspended from duty. It looks like a man has been wrongly convicted, and suddenly the media are baying for blood. Wisting, who has spent his life hunting criminals, is now the hunted.

Viggo Hansen was a man nobody ever noticed, even though he lived in the midst of a close-knit community. His death doesn't hit the headlines, but there is something about the case that catches the attention of William Wisting's journalist daughter, Line, and she decides to write a newspaper article with a different twist for the festive season: the portrait of a completely anonymous and obscure person whose death goes unremarked and unmourned.

Four feet…from four different victims? In Stavern around midsummer a severed left foot in a training shoe is washed up on the shore. Then another, and yet another. Altogether four left feet in the course of one week. Police Inspector William Wisting has many years of murder experience behind him, but he has never examined evidence like this. Four feet…from four different victims?

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. 

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. 

Oslo, 2018. Former long-distance runner Sonja Nordstrøm never shows at the launch of her controversial autobiography, Always Number One. When celebrity blogger Emma Ramm visits Nordstrøm’s home later that day, she finds the door unlocked and signs of a struggle inside. A bib with the number one has been pinned to the TV. Police officer Alexander Blix is appointed to head up the missing-persons investigation, but he still bears the emotional scars of a hostage situation 19 years earlier, when he killed the father of a five-year-old girl.

Oslo, New Year’s Eve. The annual firework celebration is rocked by an explosion, and the city is put on terrorist alert. Police officer Alexander Blix and blogger Emma Ramm are on the scene, and when a severely injured survivor is pulled from the icy harbour, she is identified as the mother of two-year-old Patricia Smeplass, who was kidnapped on her way home from kindergarten 10 years earlier and never found. Blix and Ramm join forces to investigate the unsolved case.

At 59 years old, Valdemar Roos is tired of life. Working a job he hates, with a wife he barely talks to and two step-daughters he doesn't get on with, he doesn't have a lot to look forward to. Then, one day, a winning lottery ticket gives him an opportunity to start afresh. Without telling a soul, he quits his job and buys a hut in the remote Swedish countryside. Every day he travels down to this man-made oasis, returning each evening to his unsuspecting wife. Life couldn't be better, until a young woman arrives in paradise.

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....

Two men are brutally murdered with an axe in the quiet coastal town of Kaalbringen, and Chief Inspector Van Veeteren, bored on holiday nearby, is summoned to assist the local authorities. The local police chief, just days away from retirement, is determined to wrap things up before he goes. But there is no clear link between the victims. Then one of Van Veeteren's colleagues, a brilliant young female detective, goes missing - perhaps she has reached Borkmann's Point before anyone else....

Four friends celebrate winning the lottery. Just hours later, one of them - Waldemar Leverkuhn - is found in his home, stabbed to death. With Chief Inspector Van Veeteren on sabbatical, working in a secondhand bookshop, the case is assigned to Inspector Münster. But when another member of the lottery group disappears as well as Leverkuhn's neighbour, Münster appeals to Van Veeteren for assistance.

Ari Thor returns to investigate a chilling series of crimes that are rooted in tragic events from the past. Siglufjörður: an idyllically quiet fishing village on the northernmost tip of Iceland, accessible only via a small mountain tunnel. Ari Thór Arason: a local policeman whose tumultuous past and uneasy relationships with the villagers continue to haunt him.

Easter weekend is approaching, and snow is gently falling in Siglufjörður, the northernmost town in Iceland. Ari Thór Arason is now a police inspector, but he’s separated from his girlfriend, who lives in Sweden with their three-year-old son. A family reunion is planned for the holiday, but a violent blizzard is threatening and there is an unsettling chill in the air. Three days before Easter, a 19-year-old local girl falls to her death from the balcony of a house on the main street. A perplexing entry in her diary suggests that this may not be an accident.