Ancient cultures recorded stories of enormous beings that descended from the sky; exploring if massive megalithic structures and reported discoveries of towering human-like skeletons reveal that the world was once inhabited by giants.

Andrew Collins, Ariel Bar Tzadok, Arlan Andrews, Bruce Fenton, Danila Bracaglia, David Childress, Erich von Däniken, Giorgio A. Tsoukalos, Gordon Weston, Hugh Newman, Jason Martell, Jason Osequeda, Jonathan Young, Linda Eneix, Michael J.S. Carter, Richard 'Ric' Rader, Timothy Alberino, Todd Disotell, William Henry