When the body of Jacob Kieler Junior is discovered in a stately old house in Reykjavik on a cold January morning in 1973, Jóhann Pálsson, an expert in the emerging field of forensics, is called to the scene. He soon discovers something even more unsettling than the killing itself: The victim’s father, Jacob Senior, was shot to death in the same living room nearly 30 years earlier. Through diaries Jacob Senior kept throughout his lifetime Pálsson and his colleagues try to link Jacob Junior’s shooting and the death of Jacob Senior, an ambitious man dedicated to bringing the railroad to Iceland at any cost.

D.I. Duncan McAdam is dispatched home to the Misty Isle. A body has been found buried in a remote location on the Waternish peninsula. Well-preserved in the peat, Isla Matheson—missing for the better part of two decades—is revealed to a shocked island community. A teenage runaway is dead...and no one is talking.

On the day Stockholm police officer Hanna Ahlander’s personal and professional lives crash, she takes refuge at her sister’s lodge in the Swedish ski resort paradise of Åre. But it’s a brief comfort. The entire village is shaken by the sudden vanishing of a local teenage girl. Hanna can’t help but investigate, and while searching for the missing person, she lands a job with the local police department. There she joins forces with Detective Inspector Daniel Lindskog, who has been tasked with finding the girl. Their only lead: a scarf in the snow. 

When the gutted body of a businessman is discovered in the Icelandic embassy in Berlin, Iceland's best detectives are sent to Germany to investigate the crime. The stab wounds and the murder weapon - an elegant hunting knife - suggest a ritualistic killing. But the only suspects present in the sleek modern office building were some of the island nation's cultural elite, including Jón the Sun Poet and ceramics artist Lúdvík Bjarnason.

Was the biggest case of his career the worst mistake he ever made? Ten years ago, DCI Jack Logan stopped the serial child-killer dubbed "Mister Whisper", earning himself a commendation, a drinking problem, and a broken marriage in the process...When another child disappears a hundred miles north in the Highlands, Jack is sent to lead the investigation and bring the boy home. But as similarities between the two cases grow, could it be that Jack caught the wrong man all those years ago?

Three years ago, DCI Laura Hart was the top hostage and crisis negotiator for the Greater Manchester Police. Then her husband was kidnapped. Despite her best efforts to reason with the criminals, he was brutally murdered. Now living on the Isle of Anglesey in Wales, Laura is slowly healing. Then she gets a call: armed drug dealers have seized a tourist boat—and her 10-year-old son Jake is on board. There’s no other negotiator available, and the police need her to step up.

Detective Chief Inspector Harry Grimm is forced to take leave from Bristol’s Major Investigations Team when his boss, tired of Harry chasing the ghost of his murderous father, sends him north on secondment. Used to city life and high stress, Harry fears his life will now be spent handing out speeding tickets, finding lost sheep, and directing tourists. But when a local teenager runs away, Harry finds himself pulled into an investigation much worse than anyone could have ever expected.

When a teenage girl is found dead in the woods, her body posed like an angel, Stockholm holds its breath. The kill bears a chilling resemblance to those of the Angel Maker, a serial killer caught two decades ago.... One who just died in prison. Detective Inspector Jamie Johansson is taking some much-needed time away from the London Met when the call comes in. Her father, one of Stockholm's most notorious detectives, caught the Angel Maker when she was just a girl, and Jamie has long since closed the door to that part of her life. 

Detective Jamie Johansson is finally finding normality in Stockholm when a phone call from her estranged mother draws her back to the UK. The bodies of two women have been discovered in the Brecon Beacons, badly beaten and buried shallow, and rumors of a trafficking ring are swirling. But when a crucial piece of evidence is accidentally destroyed, suspicion falls on those handling the case.

Freshly trained detective Johannes "Hannes" Niehaus is brand new to the Criminal Investigation Department. And his partner, unconventional veteran detective Fritz Janssen, isn't the least bit thrilled to train a rookie. When a woman's body washes up on the nearby shores of the Baltic Sea, Hannes gets his first taste of real crime - and a chance to prove himself. Quickly the investigation pulls him and Fritz into a whirlpool of dangerous, decades-old cover-ups.

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.

DS Lucas Walker is on leave in his hometown, Caloodie, looking after his dying grandmother. When two young German backpackers vanish from the area on their way to a ranch, he finds himself unofficially on the case. But why all the interest from the Federal Police, when they have probably just ditched the heat and dust of the outback for the coast? As the number of days the couple are missing climbs, DS Walker is joined by the girl's sister. A detective herself from Berlin, she is desperate to find her before it's too late.

Five years ago, DCI John Lomond led the search for notorious Glasgow child-killer ‘The Sandman', until personal tragedy forced him off the case. In Lomond's absence, the killer was never found. Now, with nothing but work left in his life, Lomond remains obsessed with the case–despite the nightmares it brings. When a child is abducted in similar Sandman fashion from an affluent Glasgow suburb, Lomond is brought in to find them before it's too late.

On a hot July morning on Sweden's idyllic vacation island of Sandhamn, a man takes his dog for a walk and makes a gruesome discovery: a body, tangled in fishing net, has washed ashore. Police detective Thomas Andreasson is the first to arrive on the scene. Before long, he has identified the deceased as Krister Berggren, a bachelor from the mainland who has been missing for months. All signs point to an accident - until another brutalized corpse is found at the local bed-and-breakfast.

Starting a new life in Snowdonia was always DI Ruth Hunter's dream. Until a twisted killer turned it into her worst nightmare. Detective Inspector Ruth Hunter lives with the pain of her partner’s mysterious and unsolved disappearance. About to hit 50, the veteran police officer trades in the crime-ridden streets of London for a more peaceful life in rural North Wales. But Ruth has barely settled into her new position in North Wales Police, when the body of a brutally murdered woman is discovered...with strange symbols carved into her skin.