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 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

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