Ketill is released, but his sons Torfi and Skuli remain the best lead the police have. With Skuli still on the loose, a full search-and-rescue operation is mounted. Torfi drops a hint that his group, Hammer of Thor, are planning something big, but do Andri and Hinrika have time to work out what it is before it's too late? Asgeir helps them make a breakthrough. Meanwhile Mayor Hafdis is still being threatened by a mysterious opponent, but is determined to conceal it from the police until the investment deal is signed.

The police have foiled a terrorist plot but they're left no closer to having solved the mystery of who killed Finnur, or why Gisli took the actions he did. Now his sister and victim, the Minister for Industry, is coming back home for his funeral. Half the town will also be in attendance, and Andri and Hinrika are on the lookout for any signs of family tension. Meanwhile Asgeir follows up on his suspicions about Finnur.