From UFOs to psychic powers and government conspiracies, history is riddled with unexplained events. You can turn back now or learn the Stuff They Don't Want You To Know, an audio podcast from HowStuffWorks.com.

Have any celebrities been secretly replaced?

July 26, 201963 min
Did the real Paul McCartney die in a car accident, only to be replaced by a doppelgänger? What about the similar stories surrounding Taylor Swift, Avril Lavigne, Saddam Hussein and more? Join the guys as they explore the facts, fiction and plausibility of celebrity body doubles, replacements and more. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers