Every season of In Search of Aliens ever, ranked from best to worst by thousands of votes from fans of the show. The best seasons of In Search of Aliens!

The Hunt for Atlantis

Nazi Time Travelers

The Mystery of Loch Ness

The Roswell Rock

Searching for Bigfoot

The Mystery of the Cyclops

The Mystery of Puma Punku

The Founding of America

The Mystery of the Nazca

The Alien Code

From the lost city of Atlantis to the Loch Ness Monster to the mystery of the Nazca Lines, the world is filled with tales of mysterious locations, mythical creatures and strange occurrences. But could these extraordinary stories and theories turn out to be stranger-than-fiction truths? If so, might there be an extraterrestrial explanation for these phenomena? IN SEARCH OF ALIENS follows Giorgio Tsoukalos, an Ancient Astronaut theorist and leading contributor to Ancient Aliens, as he explores the fascinating evidence behind some of the Earth’s most famous mysteries. Through Giorgio’s research of various sites around the world and meetings with scientists, witnesses and experts; this one-hour non-fiction series delves into the unknown and examines clues that could prove a possible extraterrestrial connection within some of the world’s greatest unsolved mysteries.

The Best Seasons of In Search of Aliens

The Best Seasons of In Search of Aliens

Season 1