Unlike, say, Oliver Stone’s JFK, that hoped to unravel the contradictory conclusion of the Warren Commission to suggest another theory on the assassination of the President, Fincher is fine with Zodiac remaining an enigma.
In that, Fincher's film is a cousin to Akira Kurosawa's Stray Dog (1949) and High and Low (1963), Alan J. Pakula's All the President's Men (1976) and Oliver Stone's JFK (1991).
As a procedural, we hear the words but not the music, lacking the emotional informational overload that Oliver Stone was able to play so well during JFK.
Zodiac‘s screenplay is as labyrinthine as Oliver Stone’s JFK, but Fincher never lets things become a preachy or ponderous commentary.
Dizzyingly dense, intricate in the extreme, Zodiac is the most information-packed procedural since JFK, though far more restrained when it comes to theorizing.
Sublimating all of the visual trickery that distinguished his previous films from the b- and c-grade genres from whence they came, Fincher creates a righteous epic about San Francisco's Zodiac killer and in so doing offers a cathartic close to the exact kind of serial tomes that made his name as an a-list moviemaker.While presented as a largely linear retelling of the crimes and their subsequent investigation by authorities, Zodiac is essentially the JFK of true-crime thrillers: a swirling mass of misinformation and conspiracy theory where the truth is always just out of reach.