Latest episode
S5 E6
Arctic Circle is a drama and crime TV series that premiered on Ruutu on December 21, 2018. It has 5 seasons and 33 episodes so far and is still airing new episodes. The latest episode, Season 5 Episode 6, aired on May 6, 2026.
During a routine search of an old cabin in the remote and wintery back country, Finnish policewoman, Nina Kautsalo, discovers two dead prostitutes, with a third still fighting for her life. The ensuing investigation takes a surprise twist when an extremely rare and deadly virus is discovered in the surviving woman’s bloodwork. When the Finnish Bureau of Investigation takes over the case, German virologist, Thomas Lorenz is called in to assist in identifying and containing the virus. Set within the endless white expanse of the arctic circle, Nina and Thomas must rely on each other to have any hope of saving the ones they love. But what takes precedence? A deadly virus or an active serial killer?
Last updated
33 episodes · 5 seasons
2018 · 10 episodes · Last episode: 7 years ago
E10
Nina and Thomas return to Finland. Venla gets help from unexpected source. Nina will have to step into the darkness once more.
E9
Nina and Thomas participate in an illegal expedition to Murmansk. Venla is fighting for her life.
E8
Nina and Thomas get new information from a surprising source. Thomas has to fight for his daughter's custody. Virus infection takes a frightening turn.
E7
Nina and Thomas are in danger when Raunola returns to Ivalo. Marita gets bad news in quarantine.
E6
Nina gets a chance to interrogate the fourth woman. Esko gets into trouble with the police. The first victim wakes up from coma.
E5
Virus investigation becomes even more topical. Police track down the fourth victim.
E4
Both crime and virus investigations are progressing slowly. Work and personal life are starting to mix for both Nina and Thomas.
E3
Raunola, the man suspected for the murders is leaving the investigators confused. The virus investigation takes a bad turn, and Nina and Thomas find each other in surprising place.
E2
National Bureau of Investigation joins the investigation and Nina is forced off the case. Tracks in the snow give her a new lead, however.
E1
Finnish police Nina Kautsalo makes a horrific discovery in the basement of wilderness cabin. Soon the find brings German virologist, Thomas Lorenz, to work on the case.
2021 · 6 episodes · Last episode: 4 years ago
Nina Kautsalo has moved to Rovaniemi in northern Finland, where her daughter has started special school and her mother is undergoing cancer treatment. Nina joins a new Finnish-Russian police team and is partnered with the mysterious Viktor. A new investigation leads them to Murmansk on the trail of a mysterious hunting club. The case also involves an unsolved old murder whose prime suspect has disappeared.
Arctic Circle Season 2 release dates →
E6
E5
E4
E3
E2
E1
2023 · 6 episodes · Last episode: 3 years ago
Nina Kautsalo returns to Ivalo, where she starts investigating the murder of a local pharmacist as chief of police. Meanwhile, an attempt is made to hijack a top-secret test car. Soon the murder investigation led by Nina also points in the direction of the international car business.
Arctic Circle Season 3 release dates →
E6
E5
E4
E3
E2
E1
Nina Kautsalo has returned to Ivalo as she is set to become the new Chief of Police. When a local pharmacist is found murdered, Nina is assigned to investigate the case as her last assignment with her old partner Aikio. Meanwhile, an American car manufacturer's test car is attempted to be hijacked.
2025 · 5 episodes · Last episode: 1 year ago
E5
Nina 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.
E4
Aikio'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 danger
E3
Old 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.
E2
They 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.
E1
Nina 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.
2026 · 6 episodes · Last episode: 6 months ago
E6
E5
E4
E3
E2
E1
Created by Olli Haikka, Petja Peltomaa and Joona Tena
Kristo Salminen
Reidar Hamari
Inka Kallén
Sari Nikander
Kari Ketonen
Jaakko Stenius, KRP
Taneli Mäkelä
Reino Ylikorpi
Maria Ylipää
Gunilla Lorenz
Mikko Leppilampi
Esko Kangasniemi
Anu Sinisalo
Nurse Ella
Janne Kataja
Niilo Aikio
Chike Ohanwe
Drako
Alina Tomnikov
Lana
Lena Meriläinen
Dr. Satu Kela
Joi Johannsson
Jens Mathiesen
Carl-Kristian Rundman
Jernberg
Clemens Schick
Marcus Eiben
Regina Launivuo
Blonde Prostitute
Terhi Lintukangas
International Teacher
A date for the next episode of Arctic Circle hasn't been announced yet. Follow Arctic Circle in the Streambay app and you'll be notified as soon as a new episode airs.
The most recent episode of Arctic Circle, Season 5 Episode 6, aired on May 6, 2026.
Arctic Circle has 5 seasons with 33 episodes in total.
Arctic Circle first aired on Ruutu on December 21, 2018.
Download the Streambay app, follow Arctic Circle, and you'll get a push notification the moment each new episode is released.
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