Las Noches del Hombre Lobo

Las Noches del Hombre-Lobo, also known as Nights of the Werewolf and Nights of the Wolfman, is a 1968 Spanish horror film that is the second in a long series about the werewolf Count Waldemar Daninsky, played by Paul Naschy. Seeing as this is a lost film, little is known about its plot. All that is known of it, as mentioned by Naschy himself, is that the story deals with a professor who learns that a student of his suffers from lycanthropy, and under the guise of helping him, uses him as an instrument of revenge by controlling him by means of sound waves when he transforms. It is possible this film later somehow became the 1970 "FURY OF THE WOLF MAN" as the plots of the two films are similar, and that would explain why "NIGHTS" has...