The Deep - Episode 2 preview

Watch a preview of Episode 2 of BBC One's new thriller series The Deep, set thousands of feet below the Arctic ice.

> Watch a recap of Episode 1.

> Read our Episode 1 review.

> Find out spoilers in our episode guide.

In Episode 2, the crew on the Orpheus submarine runs into danger. One crew member has died and two of the crew are trapped. They have to escape, but can they risk boarding the mysterious vessel which looms above them?