TENEBRAE
Tenebrae
Tenebrae is a 1982 Italian horror thriller film written and directed by Dario Argento. The film stars Anthony Franciosa, John Saxon and Daria Nicolodi. After having experimented with two exercises in pure supernatural horror, 1977's Suspiria and 1980's Inferno, Tenebrae represented Argento's return to the giallo subgenre, which he had helped popularize in the 1970s. The story concerns an American writer promoting his latest murder-mystery novel in Rome, only to get embroiled in the search for a serial killer who has apparently been inspired to kill by the novel.The above text is a snippet from Wikipedia: Tenebrae (film)
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