"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. Now it's 2016, and the cold case ends up on the desk of Detective Henrik Holme, who tries to convince his mentor Hanne Wilhelmsen that Jonas might have been wrongly convicted. Holme and Wilhelmsen discover that the case could be connected to the suicide of an eccentric...

When a popular celebrity chef is found murdered on the steps of the Oslo police headquarters, police investigator Billy T. and long-absent Hanne Wilhelmsen team up for an investigation that reveals that few people really knew the victim or his mysterious activities.

Small-time drug dealer is found battered to death on the outskirts of Oslo. A young Dutchman, walking aimlessly in Oslo, covered in blood, is taken into custody but refuses to talk.

"In a matter of days, two children in Norway have been kidnapped - by whom and for what reason is anyone's guess. And now one child is dead, packed like a piece of furniture and delivered to his parents' home with a horrifying note. Stumped and desperate, Norwegian police inspector Adam Stubo hopes former FBI profiler Johanne Vik can come up with answers."

The case leads her to team up with local detective Ingvar Nymann and together they set about uncovering the clues to these shocking crimes. As the number of mysterious murders starts to increase, Inger Johanne is driven by her need to protect her daughter and starts noticing a pattern. But her discovery of the killer's weakness and the connection to a ruthless international network unintentionally turns the entire threat towards herself and her family....