Silent Invasion: The Pennsylvania UFO-Bigfoot Casebook

What happens when UFO sightings, Bigfoot encounters, and paranormal activity all converge in the same place and time? Tonight’s guest, renowned researcher Stan Gordon, reveals the chilling details from one of the most extraordinary waves of unexplained phenomena in American history.

Beginning in 1973, Pennsylvania became ground zero for a surge of strange events—residents reported glowing craft, terrifying creatures, bizarre footprints, and even animals reacting in fear. Some witnesses encountered UFOs and Bigfoot simultaneously, while others described vanishing creatures, government interest, and mystery men tampering with evidence.

Stan Gordon’s groundbreaking book, Silent Invasion: The Pennsylvania UFO–Bigfoot Casebook, chronicles these incredible reports with firsthand accounts, photos, and illustrations. His research suggests that there may be far more to the Bigfoot mystery than a flesh-and-blood explanation—and that UFO activity may play a central role.