Codename: Iphigenia

S1, E4: The trail of murders, including the crown witness, shows Hallgrim that he is getting dangerously close to Sergei. Nervous, Hallgrim worries for Marie's safety and spends the night at her apartment. Searching for clues in Berit’s effects Ditte receives a tip to look for the one thing that doesn’t fit the normal pattern; a plastic card that contains a map leads the team to an industrial area in the harbour and some very dangerous goods.