David Fincher brought the police procedural/serial killer movie into the modern era with Seven. In his latest, Zodiac, Fincher returns to the dark world of methodical killers, and critics say the result is less visceral, but still dark and absorbing. Zodiac follows the search for a serial killer who terrorized the Bay Area in the 1960s and 1970s (and inspired Dirty Harry in the process). Jake Gyllenhaal plays Robert Graysmith, a political cartoonist who seeks to decode the Zodiac Killer's cryptic missives to the police and local newspapers. Critics say some may be disappointed by Zodiac's length and open-endedness (the killer was never found), but the film's moody ambience and palpable dread are intoxicating and will reward patient viewers.