La Noche de Walpurgis

Following the events in The Fury of the Wolf Man, the deceased lycanthrope Waldemar Daninsky is revived to life when two country doctors surgically remove two silver bullets from his heart while performing an autopsy on him. Waldemar transforms into a werewolf, kills the doctors and escapes from the morgue. Some time later, two students, Elvira (named after Naschy's real-life wife of 40 years) and her friend Genevieve, go searching for the tomb of medieval murderer Countess Wandessa Darvula de Nadasdy. They find a possible gravesite in the vicinity of Waldemar Daninsky's castle, and the handsome count invites the girls to stay for a few days while they investigate the site. When Waldemar helps them to uncover the grave of Countess Wandessa, Elvira accidentally revives the vampire by bleeding onto her corpse. The vampire woman turns several young women including Genevieve into creatures of the night like herself, and they roam the forest at night, killing people in eerie slow motion. Daninsky later turns into the Wolf Man, is forced to battle and destroy the vampire countess at the end of the film, after which he is killed by Elvira, a woman who loves him enough to end his torment. She plunges a silver cross into Waldemar's chest.