1. Alien Encounters
Avsnitt 1 - Alien Encounters, Säsong 2
A phenomenon is happening on farms all over the world, where cows are being mysteriously mutilated.
4. End of the World
Avsnitt 4 - End of the World, Säsong 2
A huge cataclysm is discovered in ancient texts; an alien discovery; a sinister robot takeover.
8. Medical Mysteries
Avsnitt 8 - Medical Mysteries, Säsong 2
Stories of the human body reaching beyond the limits of modern medicine.
10. Ancient Mysteries
Avsnitt 10 - Ancient Mysteries, Säsong 2
A girl finds an ancient skull that may prove aliens once walked the planet, and ancient stone carvings could rewrite the story of evolution.
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