Researcher Mike Horner has invented a machine that can transform people from sexual frigidity to being volcanic — as we see in the opener with Crystal Wilder and Terry Thomas. But who's that sneaking into the lab while Mike's gone and Tom Byron is supposed to be watching the place? Well, the body's pretty recognizable as Tina Tyler's, even if you don't see the face. Tina's a nympho who wants to boost her sexuality even higher — and it works, except for the black-widow spider who accidentally crawls onto the machine with her. From then on, Tina's a killing machine, and Mike and reporter Dyanna Lauren have to stop her. Okay; so you've seen The Fly. This is better — and a damn sight sexier.

There are three excellent couplings here. Watching Terry take Crystal from behind while both are standing on the transformation machine is a sight to behold, and it'll keep your attention riveted till the facial ending. Tom Byron's passionate coupling with Leena in an alley setting might have been awards-worthy, if it hadn't been interrupted midway through for plot material. Finally, you'll see Tina really putting her heart into her work with Steve Drake; the two go through enough positions to kill anybody, even without the spider venom. Also look for Paul Morgan to plug Laurie Cameron anally in their threeway with Lilli Xene (who looks great!). Though the art direction is laudable for its ingenuity, slow pacing during the non-sex scenes keeps this excellent feature from scoring higher. Truly superb box cover shot adds to the marketability.