Taboo VI: The Obsession (1988)

Since its inception, the "Taboo" movie collection never has shied away from the controversial subject of incest. In Volume VI, "The Obsession" is an all in the family affair once again.

This time out, brothers & sisters takes center stage as two twins - naughty nympho Nina Hartley (Doreen) and horny Joey Silveria (Dalton) - realize the feelings they have for each other and decide to do something about it, even if it means two timing their spouses and breaking up their marriages in the process. In the immortal words of the "Beverly Hillbillies" theme song, someone should tell the kinfolk to move away from that there situation. It's an invite for trouble.

This movie would be even greater if Kay Parker was in it but Nina Harley does a great job.