Season 1 of Arctic Circle premiered on December 21, 2018.

Season 2 of Arctic Circle premiered on December 19, 2021.

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.

Season 3 of Arctic Circle premiered on October 4, 2023.

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.