There is a secret so dangerous that revealing it would devastate the foundations of every man-made institution.Whispered in legend. Hidden by myth. Woven throughout history. Encoded in story, stone, symbol, and art.A secret worth killing for.Almost every person on Earth knows it as the Holy Grail. Shrouded in mystery, she hid beneath the symbol of a cup—waiting. Until now.For millennia, humanity thrived thro...