Floating Boomerang UFO, Mermaid Stalks Boat, and Underwater Ocean Boom

Did a UFO shut down an airport in England? A relaxing trip on a river takes a strange turn - did tourists see a mermaid? Did the Navy record the cry of a mysterious underwater creature? A man in Costa Rica films a strange figure sitting in a tree, could it really be a goblin? Tony Harris and his team of experts evaluate the evidence behind the strangest photos, video, and sound recordings in history.