All Available Season All Season Season 1 Aug, 2013 6 episodes 0.0 Season 2 Oct, 2014 7 episodes 0.0 The Great Pyramid, the statues of Easter Island, Blackbeard’s ship and other mysteries of our past are examined through the lens of modern science. Season 3 Apr, 2016 6 episodes 0.0 Season 4 Apr, 2017 8 episodes 0.0 Season 5 Sep, 2018 6 episodes 0.0 Season 6 Nov, 2019 6 episodes 0.0 Season 7 Aug, 2021 6 episodes 0.0
