Questioning if you occur to’re too outdated to develop to be an actor ? David Fincher’s interval drama is for obsessives. In telling the story of the Zodiac Killer, a serial assassin who captured the public creativeness by sending letters and puzzles to the Bay House press, the famously meticulous director zeroes in on the cops, journalists, and novice code-breakers who made identifying the jail their life’s work. With Jake Gyllenhaal’s cartoonist-turned-gumshoe Robert Graysmith on the center, and Robert Downey Jr.’s barfly reporter Paul Avery stumbling across the margins, the movie stretches throughout time and area, turning right into a…