Arctic CircleSeason 42025 · 5 episodesEpisodes1A Distant GuestNina continues as Ivalo's police chief. Her son Santeri is with her. Stenius comes to ensure security for an international conference. Nina investigates a major accident that turns out to be a mass murder.2Mark of the ChosenThey want to keep the mass murder investigation a secret. Aikio smells a burnt cart. A terrorist suspect arrives in Ivalo. The threat of terrorism, mass murder, and a brilliant comet in the sky seem to be connected.3Scars of the PastOld events related to the religious sect are beginning to unravel. Nina interrogates Ossi about the past. Marita is warned about the prophecy. Aikio is shot. The police find out who is behind the mass murder.4The Last of His FamilyAikio's condition is serious. Nina identifies the terrorist wanted by the FBI. The motive for the mass murder is confirmed. In Ivalo Visiting astrophysicist Jonathan Sprout's life is in danger5Divine GuidanceNina finds out about 40-year-old events and who the last representative of the Taimenen family is. Jarmo and Esko drive to the wilderness church. Tuomas kidnaps Santer. A desperate Nina decides to trust the guidance.Season 1Season 2Season 3Season 5
