

On day one of the experiment, the officers patrol the tense Klara district. Carin searches for a lost item but finds more than she bargained for.

Carin receives a mysterious letter and decides to investigate a case outside her jurisdiction, while Ingrid challenges troubling conduct at the station.

An abrupt exit casts doubt on the experiment's future. A surprise guest arrives for Carin, and a powerful external force pulls strings behind the scenes.

The women start finding their feet, with Siv earning respect for an arrest and Carin determined to uncover the truth, but Ingrid's conscience irks her.