Unsolved!

Introduces students to the mysteries surrounding UFOs, with first-hand accounts of alien encounters.

Introduces children to the mysteries, folktales, and strange happenings surrounding the Bermuda Triangle.

Recounts the ghostly encounters people claim to have had with the pilots and flight engineer who died in a plane crash in 1972.

Recounts the legends, myths, and folktales surrounding mysterious creatures from the depths of the world's lakes, oceans, and rivers.

Discusses various cases in which people claim to have seen or found signs of Bigfoot, the Yeti, the Wildman of China, the Asian Almas, or other creatures that may be Neanderthal survivors, and covers the likelihood of hoaxes despite testimony by scientists.

Discusses various cases around the world in which people claim to have seen or been abducted by aliens, and covers reports and testimony of occurrences that are either denied or argued against by the government, psychologists, or other scientists.

Presents a discussion of mysterious structures from around the world, including the moai of Easter Island, the pyramids of Egypt, and the ruins of Tiahuanaco, and includes photographs and illustrations.

Recounts the ghostly encounters people claim to have had with the pilots and flight engineer who died in a plane crash in 1972.

Explores the legends of the land of Atlantis lost deep in the ocean. Discusses the origins of the legends and searches for the lost land. Features many colorful illustrations.

Examines real-life cases where dreams appear to have been predictions of events yet to happen.