<P> It: Chapter One, commonly known as It, is a 2017 American supernatural horror film directed by Andy Muschietti, based on the 1986 novel of the same name by Stephen King . The screenplay is written by Chase Palmer, Cary Fukunaga and Gary Dauberman . The first of a planned duology, the film tells the story of seven children in Derry, Maine, who are terrorized by the eponymous being, only to face their own personal demons in the process . The novel was previously adapted into a 1990 miniseries . </P> <P> The film stars Jaeden Lieberher and Bill Skarsgård as Bill Denbrough and Pennywise the Dancing Clown, respectively, with Jeremy Ray Taylor, Sophia Lillis, Finn Wolfhard, Wyatt Oleff, Chosen Jacobs, Jack Dylan Grazer, Nicholas Hamilton, and Jackson Robert Scott in supporting roles . Principal photography began in the Riverdale neighborhood of Toronto on June 27, 2016, and ended on September 21, 2016 . Other Ontario locations included Port Hope and Oshawa . </P> <P> It premiered in Los Angeles on September 5, 2017, and was theatrically released in the United States on September 8, 2017 . Upon release, the film set numerous box office records and has grossed over $666 million worldwide . Unadjusted for inflation, it is the highest - grossing R - rated horror film of all - time, the highest - grossing horror film internationally, the second highest - grossing horror film overall after The Sixth Sense and the second highest - grossing R - rated film of all time (after Deadpool). It is also the highest - grossing horror film of 2017, the highest - grossing R - rated film of 2017 and the 9th highest - grossing film overall of 2017 . It received positive reviews, with critics praising the performances, direction, cinematography and musical score, and many calling it one of the best Stephen King adaptations . </P> <P> A sequel, It: Chapter Two, is scheduled to be released on September 6, 2019 . </P>

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