When a shocking double homicide goes unsolved for 16 years, a detective teams up with a genealogist to catch the killer before it becomes a cold case.

A young Romanian woman named Lidia is lured to Sweden with promises of a better life, but is instead forced into prostitution. In search of revenge, her fate is interwoven with police officer Ewert Grens who chases a dangerous criminal.

Based on Kristina Ohlsson's novels, the series follows unconventional but cunning criminologist Fredrika Bergman who joins a special investigations unit in Stockholm.

Olle Hulten wakes up drunk on the ferry between Sandefjord and Strömstad. In his car is a gun and a lot of money. Simultaneously the police is chasing a robber whom have hijacked a car and is holding the security guard at gunpoint.