When the French police discover the blood-drained bodies of young women floating in the river Seine, journalist Pierre Lantin undertakes a personal investigation into the "Vampire Murders." His work is forever being interrupted by the unwanted advances of Gisele, the beautiful and wealthy niece of the Duchess du Grand - who, unbeknownst to him, is, in fact, the vampire ringleader of a criminal underground of mad scientists and re-animated corpses, devoted to keeping her forever young! Released in a heavily altered version as The Devil's Commandment, this pioneering shocker - acknowledged as the first genuine Italian horror film - is presented in its original European version. Presented in Black & White, Italian Language Film with English Subtitles.