Sinopsis Cerita :

Jake Gyllenhal is a socially awkward newspaper cartoonist named Robert Graysmith who becomes obsessed with the serial killer, Zodiac, who killed (and lied about more killings) in Northern California in the 1960s and 70s when the publicity-hungry killer starts writing to his paper among others. He gloms onto columnist Paul Avery (Robert Downey Jr.), who has the crime beat and gets overly involved with the investigation. Lead investigator, David Toschi (Ruffalo) has his hands full with the investigation and the intense interest that the story is generating. Anthony Edwards (of ER fame, but he will always be Goose from Top Gun to me) plays his partner.