Vampire Girls Gone Wild! In this delicious culmination to Hammer Film’s luridly decadent lesbian vampire phase, and the conclusion of screenwriter Tudor Gates’s “Karnstein Trilogy,” orphaned twin sisters Frieda and Maria (played by identical twins and October 1970 Playboy Playmates Mary and Madeleine Collinson) move from Vienna to the village of Karnstein, where they are taken in by their austerely puritanical witch-hunter uncle Gustav (Peter Cushing). Entertaining himself with a sacrificial rite up at the castle meanwhile, jaded libertine Count Karnstein (Damien Thomas) inadvertently resurrects his vampire ancestress Mircalla (Katya Wyeth), who shows him how to have a really good time. And when the even racier Frieda, who has taken a fancy to the Count, slips away one night to visit the castle, the stage is set for a witch hunters vs. vampires showdown.