'Klondike' Cast Invade 'Gold Rush' Preshow 'Dirt' (Exclusive)

Plus check out a first-look clip from the six-hour miniseries that begins Jan. 20. Discovery is going all out to promote its first original scripted entry, Klondike. The six-hour miniseries, which stars Game of Thrones' Richard Madden, tells the story of the last great Gold Rush in history. Madden will join Klondike co-stars and executive producers for a special episode of Discovery's Gold Rush preshow The Dirt on Monday, Jan. 20 at 7 p.m. That special will lead into a new episode of Gold Rush b...