The Devil in Miss Jones 4: The Final Outrage (1986)

The conclusion of Justine Jones' erotic odyssey as she continues her quest to find a way out of Hell with a little help from her infernal guide. Their search takes them through the sexual underworld, where every known sexual whim is a reality; then it's down to 'The Racist Room' where bigots discover the finer points of race relations. But the clincher comes in the 'Taboo Room' where Justine discovers the shocking key to her forbidden past.