Secret History #1: How Power Works (4K Re-Upload with Audio Fixed)

Secret History #2: How Societies Collapse

Secret History #3: Death by Gerontocracy

Secret History #4: How Evil Triumphs

Secret History #5: The Birth of Evil

Secret History #6: The Psychology of Evil (Graphic and Disturbing, Viewer Discretion Advised)

Secret History #7: Death by Meritocracy

Secret History #8: Death by Bureaucracy

Secret History #14: Legacy of the Steppes

Secret History #15: Capital and the Bronze Age Collapse

Secret History #16: The Big Bang of Greek Civilization

Secret History #17: Literary Genesis

Secret History #18: Thus Spoke Zarathustra

Secret History #20: The Hellenistic World