This is a classic American International Pictures (AIP) release "based" on HP Lovecraft's "The Dunwich Horror." It is noteworthy for only one reason, in my opinion. It starred virginal, blond, all-American good girl Sandra Dee in a role that was quite the unexpected departure from anything she had done before or since. The GIMP-worthy scenes involved her laid out (in a flimsy black almost-but-not-quite see-through garment that let you know she was nude underneath) on a stone altar for the "Old Ones" to impregnate at the climax of a long and tedious ritual.

The movie begins with a flashback in which we see an attractive woman in childbirth, moaning and writhing in pain on a bed, covered in sweat. She is wearing a flimsy black garment like Sandra Dee wears later except this one, not being worn by Sandra Dee, is marginally more see-through and she is not wearing a bra although she is wearing black bikini panties. She is helped to stand by her husband and we cut to credits. This has a low GIMP factor unless sweat-covered women writhing in pain on a bed works for you.

Flash forward to the present (well, 1970 anyway) and we are introduced to Sandra Dee, who is an assistant named Nancy (but I'm going to continue referring to her as Sandra Dee) working with a professor who is lecturing on the Necronomicon and he just happens to have the last known copy. Wilbur Whateley (Dean Stockwell) wants it to perform a presumably profane ritual and seduces or hypnotizes pretty blond virginal Sandra Dee into letting him see it, then into spending the weekend at his home, where talk turns to sex and we find out Sandra Dee is, in fact, playing a virginal character. And we know what happens to virgins when there's an altar around.

So one thing leads to another and finally at the 46:00 minute mark we get Sandra Dee hallucinating about being stretched out on that altar. She is wearing the black flimsy garment. She is not wearing panties because the garment is cut all the way up on the sides to her armpits and there is nothing but bare, creamy white thigh. There is a loose gold belt cinched at her waist, though. She is slowly moving her head from side to side, eyes closed, in some dream state, moaning and licking her lips every so often. Wilbur is there and caresses her thigh, then moves to stand at her feet. Her knees are parted and up in the air and he begins to undress. He removes the gold belt and slides his hand up her thigh and under the garment. Next we see him caressing her garment-covered breasts but then he slides his hand down her neckline and starts kneading one of her breasts and the vigor with which he kneads makes you think you're going to catch a glimpse of a nipple but no joy. She's still in her dream state, breathing hard and moaning and gasping. (Me, too.) The scene abruptly ends.

At the 51:00 minute mark, we see Sandra Dee's friend and fellow assistant, actress Donna Baccala playing Elizabeth, who is concerned and searching for Sandra's character in the Dunwich house, open a door she wasn't supposed to. She is fully clothed and even wearing a trench coat, but as she is attacked in an irritating red-and blue-screen series of flashes, she is down to her dress, then down to her underwear, then nude. All in a series of fast flashes that you really have to pay attention to or you miss her "undressedness." It is an attack by some kind of monster during which she is stripped but I think it is likely she just ends up dead. Ultra low GIMP factor, but it does happen.

Finally, at the 1:05:30 minute mark, we get Sandra Dee really laid out on the stone altar wearing the black flimsy garment. There is interminable chanting and twirling of a sacrificial knife and the whole time Sandra is almost off screen, her side being used as a lectern for the Necromonicon. Cut away for plot developments.

At 1:18:00, Dean Stockwell finally finishes his ritual and moves to Sandra Dee's bare feet. He takes hold of her ankles and moves her legs apart. Then he takes the book from where it was propped against her side and props it up between her legs. That is like the last place I would have put that book. But Sandra Dee's character seems to appreciate it, as she turns her head to the side and brings her hand up to her mouth and moans suggestively. She acts for all the world like the book is having sex with her. (Maybe it is.) The camera moves lovingly up and down her body. It lingers at her cleavage although there is nothing to see there. It pans up her legs as she moves her knee slowly up and down, and rocks just enough that we get an extra big flash of her butt cheek. She licks her lips, She moves her hand to and fro at her side. It is actually a pretty hot scene, considering there is no nudity, no violence, no rape, and no bondage. But she is in a drugged state being taken advantage of by an evil devil worshipper, so that qualifies as some peril.

The plot gets in the way (again) at this point, and when we finally return to sacrificial Sandra Dee several minutes later, the bad guy is still chanting and reading from the book propped up against her crotch, but on the plus side we are treated to a slow pan up Sandra Dee's body, and you can see that she is nude beneath the garment because we see a luscious unbroken expanse of creamy white flesh all the way up to her armpit. Happily, she has stretched her arm out to the side. Another cut away and when we get back bad guy Dean Stockwell looks like he is having sex with her using his eyes. She is rocking her head pleasurably and licking her lips. There is a great shot where she actually lifts her butt up off the altar and we see just a little bit more of her. The camera loves Sandra Dee in all her almost-nakedness and rarely misses a chance to tease the viewer.

The good guys arrive and have a war of arcane and unintelligible words with the bad guy, which are probably spells and counterspells. All during this time Sandra Dee is moaning, the winds are whipping up, pages of the book are flipping back and forth, but does the wind blow that garment up to reveal more of Sandra Dee? Of course not. However, there is a point where it looks like you can see her hard nipple through the garment.

The bad guy goes up in flames, the creature he was conjuring is vanquished and Sandra Dee sits up suddenly not in a dream state any longer. As she is being led away from the altar, though, the camera focuses on her belly and the image of an almost-full-term fetus is superimposed onto her, so there was some kind of sex and she is with child. Or whatever you would call a new-born "Old One." So score one for the bad guys.