Summary: In Paris, France, a crazed duchess, obsessed with retaining her youth, has her scientist lover kill various women and draining their blood for her use while a smug journalist seeks out leads for the so-called 'vampire murders' and links a local drug addict to the case whom is connected to the mad scientist. (imdb)

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AKA: The Devil's Commandment

Genre: Horror

Country: Italy

Directed By: Mario Bava, Riccardo Freda

Written By: Riccardo Freda, Piero Regnoli, J.V. Rhemo

Starring: Gianna Maria Canale, Carlo D'Angelo, Dario Michaelis, Wandisa Guida, Angelo Galassi, Renato Tontini

More information at the Internet Movie Database