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?

Bergen Private Investigator Varg Veum is perplexed when two wildly different cases cross his desk at the same time. A lawyer, anxious to protect her privacy, asks Varg to find her sister, who has disappeared with her husband, seemingly without trace, while a ship carrying unknown cargo is heading towards the Norwegian coast, and the authorities need answers. Varg immerses himself in the investigations, and it becomes clear that the two cases are linked, and have unsettling - and increasingly uncanny - similarities to events that took place 36 years earlier.

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.

2002, Quebec. A former schoolteacher is accused of brutally stabbing her husband—a famous university professor—to death. Detective Maxine Grant, who has recently lost her own husband and is parenting a teenager and a new baby single-handedly, takes on the investigation. Under enormous personal pressure, Maxine makes a series of macabre discoveries that link directly to historical cases involving black magic and murder, secret societies and spiritism...and women at breaking point, who will stop at nothing to protect the ones they love.

Art expert Emma Lindhal is anxious when she's asked to appraise the antiques in the infamous manor house of one of Sweden's wealthiest families, on the island of Storholmen, where a young woman was murdered nine years earlier, her killer never found. As she goes about her painstaking work and one shocking discovery yields clues that lead to another, Emma becomes determined to uncover the secrets of the house and its occupants. When the lifeless body of another young woman is found in the icy waters surrounding the island, Detective Karl Rosén arrives to investigate.

Summer, 1943. Daniel Berkåk works as a courier for the Press and Military Office in Stockholm. On his last cross-border mission to Norway, he carries a rucksack full of coded documents and newspapers, but before he has a chance to deliver anything he is shot and killed and the contents of his rucksack are missing. The Norwegian government, currently exiled in London, wants to know what happened, and the job goes to writer Jomar Kraby, whose first suspect is a Norwegian refugee living in Sweden, whose past that is as horrifying as the events still to come.

Fisheries officer Simone Lord is transferred to Quebec's remote Magdalen Islands for the winter, and at the last minute ordered to go aboard a trawler braving a winter storm for the traditional grey seal hunt, while all of the other boats shelter onshore. Detective Sergeant Joaquin Moralès is on a cross-country boat trip down the St Lawrence River, accompanied by Nadine Lauzon, a forensic psychologist working on the case of a savagely beaten teenager with Moralès' old team in Montreal.

When Óttar Karlsson, a wealthy and respected government official and businessman, is found murdered, after failing to turn up at his own surprise birthday party, the police are at a loss. It isn't until young police officer Sigurdís finds a well-hidden safe in his impersonal luxury apartment that clues start emerging. As Óttar's shady business dealings become clear, a second unexpected line of enquiry emerges, when Sigurdís finds a US phone number in the safe, along with papers showing regular money transfers to an American account.

Icelandic sisters Áróra and Ísafold live in different countries and aren‘t on speaking terms, but when their mother loses contact with Ísafold, Áróra reluctantly returns to Iceland to find her sister. But she soon realises that her sister isn’t avoiding her...she has disappeared. As she confronts Ísafold’s abusive, drug-dealing boyfriend Björn, and begins to probe her sister’s reclusive neighbours, Áróra is led into an ever-darker web of intrigue and manipulation.

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.