Is a strange primate, standing 10 feet tall and weighing in at a thousand pounds, roaming the dense forests of the Pacific Northwest? For over 50 years, countless eyewitnesses claim to have seen the creature we've dubbed Bigfoot, and enthusiasts have collected footprints that do not match any bipedal species known to us. So who, or what, is this mythic creature? Scientists examine the facts, use rigorous analysis, and pull together missing evidence to find the truth behind the hairy legend.