Brian Unger researches the life that Al Capone led in Miami after leaving his shady Chicago past behind. He relives Capone's trial and takes an exclusive tour of his mansion. Then, he gets the inside scoop from Scarface's niece.

Brian and locals take New Mexico by storm, riding in the hoofprints of Wild West legend Billy the Kid. Then they visit the Manhattan Projects top-secret military site, where scientists built and tested the first atomic bomb.