Inside: Russia's Toughest Prisons

Three Russian prisons unlock their doors to an international film crew and reveal what life inside is like for the nation's most brutal criminals. Three Russian prisons unlock their doors to an international film crew and reveal what life inside is like for the nation's most brutal criminals. Three Russian prisons unlock their doors to an international film crew and reveal what life inside is like for the nation's most brutal criminals. Three Russian prisons unlock their doors to an international film crew and reveal what life inside is like for the nation's most brutal criminals.