Discusses the facts and myths surrounding the case of the Boston Strangler, in which eleven women living in and around the Boston area were murdered in similarly brutal ways in 1962.
Debates the existence of various monsters, such as the abominable snowman, the North American cryptid, the Yowie, the mapinguari, mokele-mbembe, and Chupacabra.
Explores the unsolved mysteries of how ancient peoples built the pyramids of Egypt and Teotihuacan and created the Nazca lines of Peru, examines the so-called "Starchild" skull which some believe to be the skull of a child with an alien father and human mother, and looks at cave and rock drawings around the world, addressing questions of whether the ancient humans could have have alien help.
Discusses the mystery of crop circles, including a history of the phenomenon, many of the explanations that have been considered, hoaxes that have been exposed, and more.
Discusses the mystery of ships and airplanes that have vanished in the area of the Atlantic Ocean known as the Bermuda Triangle, and looks at some of the possible reasons for these disappearances.
Describes sightings of unidentified water creatures, including the Biblical Leviathan, sea serpents, and the monsters supposedly inhabiting various lakes.
