Behind the Scenes of the 'Build' Theme Video

February 10th, 2017 Ed Begley Jr. hosts this episode of American History Mysteries where, in 1942, the American Government - in anticipation of the “International Threat” - spent $1 trillion dollars on the largest and most expensive robot in history. Tune in as we unveil this lost footage for the very first time. As we approach the end of the theme...