An attack on a colleague leads Katarina to seek out the truth of what happened during the riots. The trail leads straight to her own police squad.

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When the evidence proves too weak to convict an infamous wife beater, Katarina's loyalty to her squad is tested. How far is she prepared to go to be part of the team?

A wave of burglaries hits Gothenburg's finer areas. During a patrol, Katarina and Robert are taken hostage when they surprise the violent robbers at a family's home.

Katarina infiltrates a gang of drug smugglers but finds it hard to separate her career role from her private life.