""Mysteries of Alien Beings"" reports on four men who say they were abducted while on a fishing trip in Maine's Allgash Wilderness, and includes research by Harvard psychiatrist John Mack. Also: a pilot's alleged UFO sightings in Kazakhstan; efforts to locate a nurse who reportedly helped with autopsies of alien beings that emerged from the wreck of a UFO.
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Ready to Watch Unsolved Mysteries, Season 6, Episode 52?