Rick Marx's uncredited script for this series of four classic Henri Pachard Adult movies develops beyond the core obsession with incest to explore villainess Raven's dastardly character in Part 3, with her transition to a film acting career.
Pachard packs in the sex scenes (seven in 71 minutes), beginning with Raven's brother Tom Byron away at Brown University, humping his girlfriend, luscious Carol Cross. Meanwhile, Raven is still having sex with her daddy Paul Thomas, while mom Gloria Leonard, slowly turning into a zombie under the effects of pills Raven is feeding her as tranquilizers, pathetically awaits the visit of son Tom for Christmas Vacation.
PT requests that Queen Bee Raven move out of their bedroom temporarily to keep up appearances, as they will be hosting Tom and Carol, as well as a planned visit from a key business associate and his wife: movie producer Joey Silvera and frau Sarah Bernard.
Raven manages to seduce her brother Tom, and then bamboozles Carol into having lesbian sex with her, including a vibrator inserted in Carol's posterior, topping it off with bringing Tom into the picture for a more than chummy teenage threesome. This is strong stuff, even topping the series' first two installments.
After Tom & Carol leave, it's time to entertain Silvera & Sarah, with a rather brittle dinner in which ma Gloria is out of it, Raven can't resist flirting with daddy, and the guests are nonplussed. After dinner Joey and Sarah have sex, but Raven joins them for yet another threesome. Result is significant, as after his money shot Raven requests: "I want a screen test", to which the producer replies: "You had it".
Part 3 climaxes amazingly with mother Gloria getting into the bathtub to wash her son, ignoring his objections that he's a grown 19-year-old now, and telling him of the Raven/daddy incest. There's no time for Tom to mull over his own guilt feelings for having succumbed to sis Raven's incestuous desires before Gloria has seduced him as well - completing the circle of heterosexual taboos.
