1/6. DCI Silva and DI Longacre investigate the murder of a British citizen in the Arctic, but they soon find themselves caught in an escalating political situation. Also in HD. [S,AD]
2/6. Amy is on the clock to save a hostage, while Kirsten navigates international agendas in the Arctic in the hunt for a missing Chinese scientist. Also in HD. [S,AD]
5/6. Vigil is forced into lockdown as disaster strikes. With communication lost, Kirsten desperately hunts for clues to the source of the threat to Vigil. Also in HD. [S,AD]
4/6. Kirsten closes in on the killer, but their capture reveals the grave threat that Vigil faces. On the submarine, Amy makes a terrifying discovery. Also in HD. [S,AD]
3/6. Kirsten's investigation takes her into the heart of Scottish politics, but when she unearths a navy cover-up, it leaves Amy questioning who she can trust on Vigil. Also in HD. [S,AD]
1/6. When a crew member is found dead aboard the Trident nuclear submarine HMS Vigil, Detective Amy Silva is flown out to investigate. Also in HD. [S,AD]