| When the crew of the Kinloch Bravo find themselves cut off from all communication with the Scottish mainland by a mysterious fog, they must fight to find a way home whilst managing environmental pressures, mounting paranoia and rising tensions. But as the threat facing them reveals itself to be something beyond their wildest imagination, the divided crew must form an alliance to ensure survival. |
| Name | Character | Episodes |
|---|---|---|
| Iain Glen | Magnus MacMillan | 12 |
| Martin Compston | Fulmer Hamilton | 12 |
| Owen Teale | Lars Hutton | 12 |
| Rochenda Sandall | Cat Braithwaite | 12 |
| Abraham Popoola | Easter Ayodeji | 12 |
| Emily Hampshire | Rose Mason | 12 |
| Molly Vevers | Heather Shaw | 12 |
| Stuart McQuarrie | Colin Murchison | 12 |
| Nikhil Parmar | Harish | 8 |
| Mark Addy | Coake | 6 |
| Alice Krige | Lennox | 6 |
| Ross Anderson | Cameron | 6 |
| Calvin Demba | Barry 'Baz' Roberts | 6 |
| Richard Pepple | Grant Dunlin | 6 |
| Phil McKee | Bremner | 6 |
| Cameron Fulton | Garrow | 5 |
| Jacob Fortune-Lloyd | Darian York | 4 |
| Sanjeev Kohli | Doctor Sail | 3 |
| Mark Bonnar | Alwyn | 2 |
| Emun Elliott | Leck | 2 |
| Kerri McLean | Anna Dunlin | 1 |
| Mark Bonnar | Alwyn Evans | 0 |