The possibility of other intelligent species existing in the universe; the alleged evidence of these extraterrestrials hiding in plain sight; UFO sightings and strange structures on Mars.

Throughout recorded history, many people have claimed to be able to see the future and can predict, or even influence, events they first witness in their mind's eye.

Most disappearances can be explained by either foul play or bad luck. However, there are some cases that defy conventional wisdom. How can a modern jetliner simply drop off radar screens? And why do so many people go missing in the state of Alaska? What really happened to a famous explorer who disappeared deep in the jungles of the Amazon? Could there be strange forces behind these vanishings?

A look into the possibility that ancient stories we consider to be fictional, such as legends, myths and folklore, are actually fragments of a larger historical record that's been lost.

Uncovering the secrets behind ancient cultures and civilizations such as the Mayan empire, the Khmer people at Angkor Wat and the Roman city of Pompeii.