The 4 season of Arctic Circle was broadcast on Elisa Viihde from mercredi 1 janvier 2025 to mercredi 29 janvier 2025. It consists of 5 episodes, the first one is called "A Distant Guest" and the last one "Johdatus (Introduction/Approach)".
Arctic Circle is set in the unforgiving polar region, amidst the icy landscapes of Finnish Lapland. After Nina Kautsalo, a Finnish police officer, finds a dying prostitute in an old cabin in the wilderness, the ensuing criminal investigation takes a surprise twist when a deadly virus is discovered in the prostitute's blood. However, when Thomas Lorenz, a German virologist, travels to Lapland to investigate the virus, he and Nina suddenly find themselves in the middle of an exceedingly unusual criminal investigation that ends up forcing them outside the law.