A cartoonist teams up with an ace reporter and a law enforcement officer to track down an elusive serial killer.
- Genre: Crime, Drama, Mystery, Thriller
- Studio: Paramount, Phoenix Pictures, Warner Bros. Pictures
- Keyword: california, san francisco, california, killing, journalist, newspaper, 1970s, victim, code, investigation, police, murder, serial killer, crime scene, reporter, whodunit, young man, fourth of july, newspaper article, neo-noir, 1960s, zodiac killer
- Cast: Mark Ruffalo, Jake Gyllenhaal, Robert Downey Jr., Anthony Edwards, Chloë Sevigny, Brian Cox