Mysterious Worlds

Crop circles are strange designs in flattened wheat, corn or barley. What do the designs mean? Who is responsible? Follow scientists, astronomers and archaeologists as they examine the designs in search of a sign.

Go on a strange journey to uncover present-day vampire cults, the people who belong to them and the dangers associated with fraternizing with blood drinkers.

Hollywood's ultimate depiction of exorcism came in 1973, with the movie "The Exorcist." Since then, exorcisms around the world have grown exponentially. Hear from people who have undergone successful exorcisms.

Hear from prophet seers and the scientists who oppose them.

Journey to space to reveal cases of UFO sightings that seem unexplainable.