Cecil B. DeMille had his biblical epics, John Ford his westerns and Mel Brooks his comic spoofs. In the world of porn, Kirdy Stevens has the market cornered on incest.

The director of the huge successes Taboo and Taboo II, now brings us the third installment of this titillating trilogy. Not much has changed over the other efforts; Key Parker is back as the moaning mommy and the sex scenes are kept at a fevered level. This time she's restless because her older son Paul, has skipped home. Looking for some family advice, she asks girlfriend Honey Wilder what to do. Guess what? Honey's making it with her young sibling, Blake Palmer. Eventually Kay sacks out with her other son, handsome Jerry Butler. Oh Kay!!

Taboo was a classic because you could really believe Kay and her pent-up frustrations. Taboo II looked at incest in another family. Taboo III relies on swarmy sex to get it by; the action is hot-and-heavy, especially a volcanic orgy sequence, but the dipsy dialogue and some heavy-handed posturing make the premise unbelievable.

Ms. Parker again proves herself to be an ageless wonder and Ms. Wilder is ever-feisty, while Jerry Butler stands up well as Key's son. Meanwhile, newcomer Lisa Lake is the epitome of bleach-blonde sluttiness as a horny groupie.

Taboo III tries hard to make a statement that's now all-too familiar: the family that sleeps together sleeps together. Not a third strike, but Kirdy Stevens has served us a screwball we've all seen before.