It was personal for Paris journalist Pierre Lantin (Dario Michaelis) when he looked into the serial killings of young women found drained of their blood. The trail would lead to an obsessed researcher (Antoine Balpêtré) and the beautiful contessa cousin (Gianna Maria Canale) he kept eternally young with his unholy experiments. Early Italian experiment in sensual terror from Riccardo Freda and cinematographer Mario Bava co-stars Carlo D'Angelo, Wandisa Guida. AKA: "Evil's Commandment," "Lust of the Vampire," "The Vampires." 78 min. Widescreen; Soundtracks: Italian, English; Subtitles: English. In Italian with English subtitles. Region Free