The Ninth Gate is a 1999 neo-noir horror thriller film directed, produced, and co-written by Roman Polanski. An international co-production between the United States, Portugal, France, and Spain, the film is loosely based upon Arturo Pérez-Reverte's 1993 novel The Club Dumas. The film stars Johnny Depp as a dealer of rare books who is tasked with authenticating a 17th-century book that purportedly contains a magical secret for summoning the Devil.

Plot

Dean Corso, a New York City rare book dealer, is hired by wealthy collector Boris Balkan. Balkan has acquired a copy of The Nine Gates of the Kingdom of Shadows, a book by 17th-century author Aristide Torchia said to be able to summon the Devil. Torchia is alleged to have written the book in collaboration with the Devil, and only three copies survived when he and his works were burned for heresy. Balkan believes only one of the three is authentic and wants Corso to inspect the other two to determine which one. During his travels, Corso comes into contact with a mysterious woman ("The Girl") who appears to be following him.