The opening scene gets right to the first victim, a pretty blond in red mini-skirt and over-the-knee black boots. The red-robes grab her, lay her face-up on a raised stone slab and chain her in spread-eagle position to the floor. They open her blouse, revealing perky natural breasts. As the rituals begin, the ashen, naked body of Isabel (Rita Calderoni), with a hole in her chest, looms above them, mounted on the wall in the manner of a crucifixion. They tear the girl's heart out and drink her blood. I liked the way they opened her blouse completely, revealing the entire torso, and that they made the chains just loose enough to allow some squirming and thrashing about.

The second victim is a dark-haired, mini-skirted girl who is cursorily attacked by an unseen "vampire". Not much GIMP interest here.

An opportunity for more victims arises when Laureen (Calderoni again) arrives at the castle with friends and family and the new part-owner of the castle (Mickey Hargitay) for an engagement party. (Several key characters in the party scene are reincarnations of figures in the witch-burning scene, so the main cast members play dual roles).

In a flashback to the same night five centuries ago, Isabel is tied AOH to a stake as a crowd jeers and condemns her. Her robe is ripped open to the navel, revealing perfectly-formed natural breasts, and her tormenters paint a red cross on her sternum. They pound a wooden stake into the site of the mark, she screams and gasps, and close-ups show her breasts and her face glistening with moisture. The fire is lit and we get a great full body shot as Isabel struggles to free herself. This is a long scene, intercut with glimpses of the engagement party. Strangely, just as the flames leap higher and Isabella is about to be overcome, Mickey Hargitay and another man race to pluck her body from the fire, but all three suddenly disappear in the smoke. Weird. A great scene up to that point, though, with building tension and a convincing performance by Calderoni.

Back in the present, brunette Christa leaves the party and goes to her room. She is suddenly grabbed by an unseen figure behind her, who covers her mouth with his hand. As his other hand opens her dress and fondles the front of her body, she at first resists, but then apparently falls under some sort of spell and starts to enjoy it. It's a hallucination, and when she snaps out of it, she is alone and fully dressed, but has vampire marks on her neck. Interesting scene with a throbbing bass track and the unseen assailant's POV from above and behind Christa's right shoulder. It combines non-consensual and consensual elements.

Later, now-vampire Christa lures red-haired Lenda into the basement for some lesbian sex and neck-biting. Suddenly, Christa disappears and the naked Lenda is alone with wrists chained to the floor below Isabel's corpse, a captive of the red-robes. One of them grabs her hair and pulls her head back, and as she pleads for mercy and the perspiration on her breasts reflects the light of the sacrificial fire, he thrusts the knife toward her chest. The scene cuts to the nude lifeless body of Christa, being discovered by Laureen. (Christa is actually undead, but I won't get into that).

That night, Laureen finds herself trapped inside a metal cage in the basement, nearly naked except for a loose-fitting blanket. The cage has knife-like projections that slowly move toward her. Through some mystical intervention, she escapes certain death with just a cut on her clavicle and collapses on the basement stairs, her right breast spilling out of her covering as she stares upward toward the light. (Lord she is beautiful)

Meanwhile, blond Viveca and ditzy virgin Stephy engage in a threesome with a guy, thus disqualifying them as potential sacrifice victims.

The appointed hour for the reincarnation draws near, and more virgins are needed, so the red-robes (vampires?) in the guise of some of the male castle guests (my guess) set upon the remaining women. Neck-biting and some nudity ensues. Two women flee wearing nothing but black cloaks, which open often, revealing lotsa skin as they run. The villagers mistake them for witches and pursue them. In an unusual scene, male villagers use branches as pitchforks and pin the two women to the ground (exposing their upper bodies in the process, naturally). The two women thrash about wildly (and entertainingly), but then they are ordered to cross over a fiery threshold to prove they are not witches.

They pass through, only to find themselves dragged back to the castle basement (don't ask). There they, and another woman, are chained to various wooden structures, now clad only in red sashes that cover little or nothing. What follows is a lengthy, bizarre sequence in which we see the women being by turns seduced, drugged with some kind of incense, or menaced with a kind of weird curved double-pitchfork type implement that fits over their faces (?). By now it's clear that the film-makers, who have probably been ingesting illegal substances, are making it up on the fly. The last 10 minutes of the movie are even more incomprehensible than what has already transpired. But there are no more GIMP scenes, so I'll leave it there.

Movie plusses: Lovely Rita Calderoni - she really sells it. Several other fairly attractive actresses, all with terrific bodies putting in energetic (if not always decipherable) performances. Occasionally cool 60's music. GIMP scenes with an abundance of nudity and eerie, menacing settings. In the GIMP scenes, one might say that each victim is more or less draped, rather than clothed, like figures in classical paintings or sculptures.

Movie minuses: Disjointed directing, writing, editing and continuity. Annoying Stephy, the addled ex-virgin. Trippy, arty imagery and frequent cutting back and forth between scenes (makes it hard to use the FF).

Movie grade: C. This is really tough to sit through, but you never know what's going to happen next and who's going to get naked. A true relic of that era.

GIMP grade: B. Especially for the first sacrifice and the witch-burning, but also for making sure that each GIMP scene includes at least partial nudity. Good compilation material here.