Justine (1976)

aka The Marquis de Sade’s Justine.  Based on the Marquis de Sade’s infamous novel, Justine: The Misfortunes of Virtue, Koo Stark stars as the innocent girl whose chosen path of goodness is thwarted at every turn by her cunning and amoral sister, Julliette, who finds happiness in debauchery. Uncut print includes trailers, interview with director Chris Boger.  DVD