World's Most Unexplained

Experts investigate whether a controversial union leader's disappearance is linked to the mob or if he went missing on his own accord. (S1, ep 2)

Numerous aviation disasters are associated with the number 191, leading many airlines to refuse to schedule a flight 191 out of skepticism and fear. (S1, ep 4)

Residents of a village reported seeing a statue of the Virgin Mary move, but some believe the phenomenon was just an optical illusion or a prank. (S1, ep 5)

Millions mourned the death of Elvis Presley in 1977, but he's been spotted hundreds of times since. (S1, ep 8)