Season 15

    Video thumbnail: Secrets of the Dead Graveyard of the Giant Beasts

    Secrets of the Dead

    Graveyard of the Giant Beasts

    Follow scientists trying to determine which giant animal was the apex predator

    Graveyard of the Giant Beasts

    Video thumbnail: Secrets of the Dead Teotihuacán’s Lost KingsPassport

    Secrets of the Dead

    Teotihuacán’s Lost Kings

    Follow scientists as they explore tombs beneath an ancient Mexican city.

    Teotihuacán’s Lost Kings

    Video thumbnail: Secrets of the Dead Cleopatra’s Lost Tomb

    Secrets of the Dead

    Cleopatra’s Lost Tomb

    Discover whether an amateur archaeologist’s theory leads to the lost tomb of Cleopatra

    Cleopatra’s Lost Tomb

    Video thumbnail: Secrets of the Dead The Alcatraz Escape

    Secrets of the Dead

    The Alcatraz Escape

    Scientists investigate whether surviving an escape from Alcatraz prison was possible.

    The Alcatraz Escape

    Video thumbnail: Secrets of the Dead Vampire Legend

    Secrets of the Dead

    Vampire Legend

    Follow scientists as they uncover the true origins of modern vampire lore

    Vampire Legend