EXCLUSIVE: Anson Mount has landed the lead in AMC’s period drama pilot Hell on Wheels. Meanwhile, Irish actress Dominique McElligott has been cast as the female lead in the Western, set during the building of the Transcontinental Railroad. The project centers on Cullen (Mount), a former slave owner and a Confederate soldier determined to avenge the rape/murder of his beloved wife by tracking and killing the Union soldiers who killed her. Fearless, Cullen winds up working on the Nebraska prairie’s Hell on Wheels’ portion of the transcontinental railroad. McElligott will play Lily Bell, an intelligent woman taking care of her ill husband who is part of the team of surveyors mapping the railroad’s course. In the pilot, Mount and McElligott join recently cast rapper-actor Common.