S1, E6: The mysterious Mediterranean island of Malta lies south of Sicily and is home to megalithic structures built by a mysterious prehistoric society. According to scholars, the massive blocks even pre-date the Great Pyramid of Giza. Just who were the people that built these sophisticated structures? Local folklore describes Malta as being the home of giants and the legendary one-eyed creature known as Cyclops. Could these stories be true--or could they offer clues to an extraterrestrial connection? Ancient Astronaut theorist Giorgio Tsoukalos investigates Matla's giant stone structures, unexplained rock carvings and mysterious elongated skulls. Could these strange antiquities be connected--and might they prove that there was a highly advanced civilization on Malta in the remote past--one that was perhaps in contact with ancient astronauts?