Horizon: Documentary investigating what caused ill-fated Russian submarine the Kursk to sink in the Barents Sea in August 2000. Scientists have pieced together new evidence to disprove theories that the disaster occurred after a deep-sea collision with an American vessel, and believe the answer to the riddle can be found in the tragedy that befell a British submarine 50 years earlier.

Starring:

Bernard Hill, Jack Fortune

Genre:

Documentary