An elusive serial killer known as the Zodiac terrorizes the San Francisco Bay in the late 1960s, while detectives aim to stop him before he claims more victims. Based on a true story.
Zodiac is a 2007 American mystery thriller film directed by David Fincher and written by James Vanderbilt, based on the nonfiction books by Robert Graysmith: Zodiac (1986) and Zodiac Unmasked (2002). It 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.