The Vanishings (S09E11)

Throughout history, tales of entire civilizations disappearing without a trace abound, spanning the globe. From an enigmatic society in China and a lost race of giants to the mysterious declines of the Classic Maya and the Anasazi, scholars struggle to provide comprehensive explanations for these vanishing acts. While these cultures may be gone, they have left behind tantalizing clues that some suggest hint at extraterrestrial involvement. This raises intriguing questions: Could these mass disappearances be linked to other unexplained incidents involving people, aircraft, and ships? And what might this reveal about humanity's future in relation to alien influences?