As the world's energy supplies dwindle, the Orpheus, a research submarine, delves into the deep of the Arctic Ocean searching for rare micro-organisms, but the crew soon find themselves in peril.

Cast:Minnie Driver, Goran Višnjić, James Nesbitt, Antonia Thomas, Orla Brady, Richard Brake,

Genre:Drama, Action & Adventure,

country:United Kingdom,

Production:Tiger Aspect, BBC, BBC Cymru Wales,