Zodiac is a 2007 American mystery thriller film directed by David Fincher from a screenplay by James Vanderbilt, based on the non-fiction books by Robert Graysmith, Zodiac and Zodiac Unmasked, which were published in 1986 and 2002, respectively. The film stars Jake Gyllenhaal, Mark Ruffalo, and Robert Downey Jr. with Anthony Edwards, Brian Cox, Elias Koteas, Donal Logue, John Carroll Lynch, Chloë Sevigny, Philip Baker Hall and Dermot Mulroney in supporting roles.
