In this special legends episode, Josh, along with several historians, tell the true and unfiltered story of exploring pioneers Meriwether Lewis and William Clark who single-handedly mapped the uncharted American frontier, but not without scandal on their expedition. Later, he takes a look at the dangerous details of building the Transcontinental Railroad Also, he exposes secrets of Wyatt Earp, either the greatest lawman or con man in the Wild West. (thetvdb.com)