Hell Below is a TV series on The Smithsonian Channel produced by Parallax Film Productions Inc. The series is narrated by Canadian voice-over artist Mark Oliver, charting the stealth game of subsea warfare and the narrative from contact to attack of the greatest submarine patrols of World War II. Six initial episodes cover the rise of the Wolfpack to the drive for victory in the Pacific. Expert analysis and stock footage are woven with re-enactments filmed on authentic Second World War era submarines.