Tenebrae (also known as Tenebre) 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, Suspiria (1977) and Inferno (1980), Tenebrae represented Argento's return to the giallo form, a sub-genre 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 film was released in Italy and throughout most of Europe without experiencing any reported censorship problems, but was classified, prosecuted, and banned as a "video nasty" in the United Kingdom. Its theatrical distribution in the United States was delayed until 1984, when it was released in a heavily censored version under the title Unsane. In its cut form, Tenebrae received a mostly negative critical reception, but the original, fully restored version later became widely available for reappraisal. It has been described by Maitland McDonagh as "the finest film that Argento has ever made."