A discovery by Sumner sends Drax into a murderous rage. Cavendish proves crucial in Baxter and Brownlee's plan. An arctic storm rages and threatens the safety of the ship's crew.

Cast: Colin Farrell, Jack O'Connell, Kieran Urquhart, Roland Møller, Philip Hill-Pearson, Gary Lamont, Gerry Lynch, Paul Brennen, Simon Rubaudo, Jonathan Aris, Jamie Maclachlan, Greg Dennis