Overview
- BBC confirms the six-part season will arrive later this year on BBC One and BBC iPlayer.
- Suranne Jones and Rose Leslie return as DCI Amy Silva and DS Kirsten Longacre.
- The investigation focuses on the shooting of a British covert special forces member at an Arctic research station, with the case threatening an international confrontation over energy and resources.
- Creator Tom Edge leads the writing team with Tom Mair and Eve Hedderwick Turner, and episodes are directed by Gareth Bryn and Faye Gilbert.
- Returning cast include Gary Lewis and Dominic Mafham, with new additions such as Jeppe Beck Laursen, Steven Miller, Naomi Yang, Benjamin Wainwright, Tornike Gogrichiani and Danusia Samal.