It is, I suppose, appropriate that Zodiac—the San Franciscan chronicle of a real-life, elusive serial killer—should read like a mash note addressed by director David Fincher to true-crime obsession. The Zodiac, after all, achieved his fame precisely because he was a "man of letters," sending taunting commentary, clues, and cryptograms to the staff of the San Francisco Chronicle and, by extension, the SFPD.
Fincher's fellow obsessives will no doubt enjoy seeing the spine-tingling case translated into reverent docudrama, but they're unlikely to gain any insight not already gleaned from years of books, feature stories, and websites that keep the unsolved case burning in our imaginations. To those completely unfamiliar with the case, Zodiac should be every bit as satisfying as a true-crime paperback. In fact, it's downright encyclopedic: scrupulous in its research and attention to detail but, with a few striking exceptions, disinterested in developing drama. For those occupying the middle ground between expert and neophyte—in an era of bleeding, leading top stories and their concentrated doses of schadenfreude—the film's 156 minutes may be a case of too much information.
Fincher takes as his sources two books by former Chronicle political cartoonist Robert Graysmith (Zodiac and Zodiac Unmasked). The latter, in particular, finds Graysmith emphatically pointing the finger at one suspect; Fincher favors the author's theory while allowing that the case remains inconclusive. Though we experience the story primarily from the perspective of Graysmith (Jake Gyllenhaal), Fincher also trails detectives David Toschi (Mark Ruffalo) and William Armstrong (Anthony Edwards). Robert Downey Jr. plays aloof Chronicle reporter Paul Avery, whose gonzo style prefigured a substance-abusive burnout.
As for the Zodiac, Fincher wisely limits himself to the agreed-upon facts of the "confirmed" attacks: on a lover's lane, a golf course, and the intersection of Washington and Cherry Streets. The killer remains inscrutable and unobtainable; the proliferation of copycats and legitimate suspects makes the Zodiac a Hydra. Zodiac pays tribute to investigation by depicting it at its most real and most maddening: the frustration of detectives trying to coordinate efforts with other police departments, the frustration of reporters trying to get access to case particulars, the frustration of a seemingly irresolvable crime.
Toschi and Graysmith meet in the maze, the latter ever pursuing the former and promoting an alliance. Toschi's sense of duty and Graysmith's armchair-detective fanaticism doom them to domestic strife, professional reversals, and two kinds of madness: dull ache and restless fervor. While the killer remains free, his pursuers get strung out playing his most dangerous game ("Nothing makes sense anymore," says one). To the extent that Zodiac has points to make, they are these: how very easy it is to get thousands of people running in circles, how very difficult it is to get justice, and how grateful we should be for the sacrifices of those who try. Fincher points out how the next generation soaks in these lessons, with Graysmith first trying in vain to shield his son, and eventually recruiting his children into a home thinktank (here, Fincher vicariously relives being an all-too-aware se7en-year-old, in San Anselmo, when the Zodiac was publicly threatening Bay Area schoolchildren).
In collaboration with cinematographer Harris Savides, Fincher once again demonstrates seductive technique and a pale, sickly-green palette. Impassive, carefully composed visuals frame exacting recreations of the Bay Area in the late '60s and early '70s. But the director's cold calculation borders on the anti-dramatic; stuffed with decades' worth of developments in the case, the narrative seems almost apologetic when it after-thinks about the characters' personal lives. It's the hazard of a movie called Zodiac: the title character is a time-consuming cipher, a black hole tugging everything into its center.
The Zodiac infamously deadpanned, "I am waiting for a good movie about me." Fincher understands and perpetuates the central theme of the case, that it is inextricable from media—the film's most jarring stylistic flourish lays a digital labyrinth of the Zodiac's letters over a montage of intelligence-gathering. The Zodiac took inspiration from The Most Dangerous Game, and Fincher alludes—directly and indirectly—to a heritage of San Franciscan mysteries: Vertigo (a masterwork on obsession), Bullitt (McQueen's hero was based on Toschi), and Dirty Harry (much to Toschi's chagrin, the villain was a Zodiac knockoff named Scorpio). One line of inquiry dead-ends at a creepy projectionist (Charles Fleischer), in a scene that self-consciously plays like a horror-movie come to life.
This scene and the three vividly realized Zodiac assaults are pools of adrenaline in the barren land mass of investigative drudgery. As such, the sanguinary thrills function as cinematic entrapment, of the "you know you want it" variety that the Zodiac pushed in his smug letters. Screenwriter James Vanderbilt's script pauses to ponder the case's perverse pull when Avery puzzles over Graysmith's angle: "This is good business for everyone but you." Zodiac may yet prove to be good business, but perhaps it drains the soul of its patrons as much as the monster, and the monstrous obsession, it depicts.