The quest for the Holy Grail has consumed knights and crusaders, and has inspired legendary tales and Hollywood blockbusters. Could it be that the epic search is finally over? Our team uses forensic analysis to solve this 2,000-year mystery.

Five hundred years before Columbus arrived, a metropolis flourished in North America. Using modern technology, we explore this lost empire and reveal its shocking past that marked the dramatic rise and fall of America's first great city.