Las Noches del Hombre-Lobo (also known as Nights of the Werewolf and Nights of the Wolfman) is a 1968 Spanish horror film about the werewolf Count Waldemar Daninsky, played by Paul Naschy. It has always been referred to as the second of Paul Naschy's 12 Waldemar Daninsky Werewolf movies. However, there are serious doubts as to whether the film was actually made; no one, including Naschy himself, has ever seen it. It was never theatrically released, nor has it ever turned up on video. It is considered today to be a lost film.