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. 

Ari Thór Arason is a local policeman whose tumultuous past and uneasy relationships with the villagers in an idyllically quiet fishing village in Northern Iceland - where no one locks their doors - continue to haunt him. The peace of this close-knit community is shattered by the murder of a policeman - shot at point-blank range in the dead of night in a deserted house. With a killer on the loose and the dark Arctic winter closing in, it falls to Ari Thór to piece together a puzzle that involves tangled local politics, a compromised new mayor, and a psychiatric ward.

DCI Jack Logan should’ve known things were going too well. Genuinely happy for the first time in years, Jack has almost fooled himself into believing that the world is a decent place. But when the discovery of a mutilated body kicks off a series of grisly murders, Jack’s dream of a peaceful life rapidly begins to crumble around him. With friends in danger and enemies begging for his help, Jack must risk everything to protect the final would-be victim and stop the most monstrous killer he’s ever faced.

When a young woman is found lying half-naked in the snow, bleeding and unconscious, and a highly esteemed, elderly writer falls to his death in the local theater, Ari is dragged straight into the heart of a community where he can trust no one and secrets and lies are a way of life. Past plays tag with the present and the claustrophobic tension mounts as Ari is thrust ever deeper into his own darkness - blinded by snow and with a killer on the loose.

It's 1987. An isolated farm house in the east of Iceland. The snowstorm should have shut everybody out. But it didn't. The couple should never have let him in. But they did. An unexpected guest, a liar, a killer. Not all will survive the night. And Detective Hulda will be haunted forever.  

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.

Una wants nothing more than to teach, but she has been unable to secure steady employment in Reykjavík. Her savings are depleted, her love life is nonexistent, and she cannot face another winter staring at the four walls of her shabby apartment. Celebrating Christmas and ringing in 1986 in the remote fishing hamlet of Skálar seems like a small price to pay for a chance to earn some teaching credentials and get her life back on track.

When a body is found abandoned under a bridge, teeth and fingerprints removed, DCI Warren Jones and his team have little to go on. And once they finally identify the victim, the case doesn’t get any easier. Estranged from his family but desperate to reconnect, the victim led a solitary life - apart from secretive liaisons with a series of partners he met online. Could one of them be guilty of his murder? Or does the truth lie closer to home?

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.

A large country mansion. A locked room. A gruesome murder. Russian oligarch Alexander Volkov has invited 1,000 guests to a party at his palatial Surrey residence, Westgrave Hall. But while giving a private tour of the library, a gunman kills Volkov, wounding his ex-wife and slaying her new beau. Nothing makes sense to DCI Craig Gillard. In the blood-spattered crime scene there are no forensic traces of anyone else involved, CCTV shows no one entered or left the library, and everyone seems to have an alibi.

It should be an easy solve: a murder in broad daylight with two eyewitnesses. But the victim is the son of a notorious local crime family who has a habit of hitting on other men’s wives; the witnesses are Serbian nationals who speak limited English. For DCI Warren Jones, this is his most challenging case yet. As the suspects pile up, the victim’s family work to protect their son’s memory by destroying any evidence that could betray his criminal past - or might have led to his killer.

On the shores of a tranquil fjord in northern Iceland, a man is brutally beaten to death on a bright summer's night. As the 24-hour light of the arctic summer is transformed into darkness by an ash cloud from a recent volcanic eruption, a young reporter leaves Reykajvik to investigate on her own, unaware that an innocent person's life hangs in the balance. Ari Thor Arason and his colleagues on the tiny police force in Siglufjordur struggle with an increasingly perplexing case, while their own serious personal problems push them to the limit.

North Devon is enjoying a rare hot summer with tourists flocking to its coastline. Detective Matthew Venn is called out to a rural crime scene at the home of a group of artists. What he finds is an elaborately staged murder - Dr. Nigel Yeo has been fatally stabbed with a shard of one of his glassblower daughter's broken vases. Dr. Yeo seems an unlikely murder victim. He's a good man, a public servant, beloved by his daughter. Matthew is unnerved, though, to find that she is a close friend of Jonathan, his husband.

Computational biologist and serial-killer hunter Dr. Theo Cray receives an off-the-record request from the FBI to investigate an inexplicable double homicide. It happened at the excavation site where a murderer had buried his victims’ remains. In custody is a forensic technician in shock, with no history of aggression. He doesn’t remember a thing. His colleagues don’t even recognize the man they thought they knew. But an MRI reveals something peculiar. And abnormal.

When a young woman is found brutally murdered in her own apartment with an intricate pattern of lines carved into her face, Copenhagen police detectives Jeppe Korner and Anette Werner are assigned to the case. Soon, they establish a link between the victim, Julie Stender, and her landlady, Esther de Laurenti, who’s a bit too fond of drink and the host of raucous dinner parties with her artist friends. Esther also turns out to be a budding novelist - and when Julie turns up as a murder victim in the unfinished mystery she’s writing, the link between fiction and real life grows.