The BEST episodes of Arctic Circle
Every episode of Arctic Circle ever, ranked from best to worst by thousands of votes from fans of the show. The best episodes of Arctic Circle!
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.
#2 - A Find
Season 3 - Episode 2 - Aired 10/11/2023
The secret of the murdered pharmacist leads Nina to investigate the international car testing in Ivalo. She encounters the American engineer Brendan she saved some years ago. Hamari is out of prison and stumbles upon the test car.
#3 - Tucked Away
Season 3 - Episode 3 - Aired 10/18/2023
The police have two murder cases on their hands, both with apparent connections to car testing. Nina agrees to go with Brendan. Hamari's son Perttu is bullied at school and takes his mind off his problems with a secret building project.
#4 - Mess
Season 3 - Episode 4 - Aired 10/25/2023
The CEO of car manufacturer Pharada arrives in Ivalo to launch a new project, but the press conference gets a bizarre twist. Nina and Brendan grow closer. Perttu is bullied even more brutally.
#5 - Burglary and Theft
Season 3 - Episode 5 - Aired 11/1/2023
Pharada security chief Walter continues their serious search of the tests car. Nina embarks on a reckless rescue attempt. Marita is about to collapse under her construction project. Perttu comes to a desperate conclusion.
#6 - Publication
Season 3 - Episode 6 - Aired 11/8/2023
Nina grapples with her own personal choice. Pharada gets ready for the launch event of their new car. When Nina finally discovers the secrets from the past, she has to race against the clock to stop a murder that has not yet taken place.
#7 - A Distant Guest
Season 4 - Episode 1 - Aired 1/1/2025
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.
#8 - Mark of the Chosen
Season 4 - Episode 2 - Aired 1/8/2025
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.
#9 - Scars of the Past
Season 4 - Episode 3 - Aired 1/15/2025
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.
#10 - Return
Season 3 - Episode 1 - Aired 10/4/2023
Nina Kautsalo has returned to Ivalo, she is becoming the new police chief. When the local pharmacist is found murdered, Nina gets to investigate her last case with her old partner Aikio.
#11 - Johdatus (Introduction/Approach)
Season 4 - Episode 5 - Aired 1/29/2025
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.
#12 - Exposure
Season 5 - Episode 1 - Aired 3/31/2026
When an ordinary Fennogrid employee stumbles upon a murder scene, she is forced into a crime with no way out. Nina launches a murder investigation, unaware that it is connected to a cyberattack that is about to begin.
#13 - Infection
Season 5 - Episode 2 - Aired 4/8/2026
When a cyberattack on Fennogrid is revealed, a local criminal investigation becomes entangled in a national crisis – and one wrongdoing begins to take on proportions that no one yet understands.
#14 - Antibody
Season 5 - Episode 3 - Aired 4/15/2026
The cyberattack on the Finnish electricity grid deepens. KRP and Traficom identify Poison as the perpetrator. In Ivalo, Klaus Kleber is placed under surveillance due to the D-Time connection, and Fennogrid employee Alvar Saarnio disappears.
#15 - Double Trojan
Season 5 - Episode 4 - Aired 4/22/2026
Lakkala's murder is linked to a cyberattack. Alvar Saarnio's updated Ivalo backup disk is revealed to be a Trojan horse. Vagan hijacks electricity distribution: Finland goes dark one city at a time.
#16 - Outbreak
Season 5 - Episode 5 - Aired 4/29/2026
Nina investigates Ori's murder at a wilderness hotel when the suspect flees to the fells. Valentin secures Klaus Kleber's connection to the D-Team. Venla reveals Klaus's hideout.
#17 - Blackout
Season 5 - Episode 6 - Aired 5/6/2026
Nina forces Nikander to hand over Klaus to her and comes into conflict with Toni. Vaga takes Leena hostage. When the power is restored, the D-Team's identity is revealed and Nina's position as a police officer is questioned.
#18 - Cellar
Season 1 - Episode 1 - Aired 12/21/2018
A Finnish police officer discovers a dying Russian sex worker being held captive in a farm cellar, carrying a deadly virus. Meanwhile in Helsinki, the case comes to the attention of the European Center of Disease Control and its German virologist.
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#19 - Parents
Season 2 - Episode 6 - Aired 1/16/2022
Nina drives back to the monastery with her father. Dad tells Nina what happened when Aava died. After reaching the monastery, a surprising turn forces Nina to save Kajante personally.
#20 - Guilty
Season 2 - Episode 5 - Aired 1/9/2022
Nina and Viktor investigate the murder of the old Lahti, because only by proving that Kajanne did not murder his wife, Nina believes that it is possible to save her from Ordo's captivity. Nina gets to know her father.
#21 - Justice and Fairness
Season 2 - Episode 4 - Aired 1/2/2022
Nina and Viktor manage to escape from the monastery. Nina promises to return to Kajante. Russian police lead promises to arrest hunters. Nina is shelved because she had left for Murmansk without permission.
#22 - Catch
Season 2 - Episode 3 - Aired 12/26/2021
The tailbone found by Nina and Viktor leads them to the desert, where they end up witnessing a human hunt. However, the police are caught. The director of the secret society invites them to dinner.
#24 - Newest Police
Season 2 - Episode 1 - Aired 12/19/2021
Nina lives in Rovaniemi due to Venla's school and her mother's cancer. A former hockey player once accused of murdering his wife disappears. Nina, a prostitute previously rescued by Nina, is contacted.
#25 - Venla
Season 1 - Episode 10 - Aired 1/4/2019
Nina is unconscious after crashing her snowmobile. Thomas manages to pull her onto his but with angry Russian officials pursuing them, and his vehicle low on gas, he is desperate to cross the border back to Finland.