The film is based on the true story of the hunt for the Zodiac Killer, a serial killer who terrorized the San Francisco Bay Area in the late 1960s and early 1970s. The story follows three men - Robert Graysmith (Jake Gyllenhaal), a cartoonist and amateur detective; Paul Avery (Robert Downey Jr.), a journalist; and Dave Toschi (Mark Ruffalo), a police detective - as they become obsessed with solving the case.
Zodiac Release Year: 2007 Director: David Fincher Starring: Jake Gyllenhaal, Robert Downey Jr., Mark Ruffalo, Anthony Edwards, and John Carroll Lynch zodiac 2007 filmyzilla
You're referring to the 2007 film "Zodiac" directed by David Fincher! The film is based on the true story
Here's a feature on the film: