Self - Narrator (3 episodes, 2014)
Self - Historian (3 episodes, 2014)
Self - Psychologist (3 episodes, 2014)
Self - Peace Researcher (1 episode, 2014)
Self - Archaeologist (1 episode, 2014)
Self - Religious Scholar (1 episode, 2014)
Self - Former Astronaut (1 episode, 2014)
Self - Curator, French National Archives (1 episode, 2014)
Self - Historian (1 episode, 2014)
Self - Publisher (1 episode, 2014)
Self - Chief Librarian, The Royal Society (1 episode, 2014)
Self - Expert on 'Skull and Bones' (1 episode, 2014)
Self - Freemason (1 episode, 2014)
Self - Historian, U.S. Senate (1 episode, 2014)
Self - Political Scientist (1 episode, 2014)
Self - Expert on Symbols (1 episode, 2014)
Self - Rosicrucian (1 episode, 2014)