Zodiac is a true crime movie based on the real-life unsolved Zodiac killer case that took place in the late 1960s and early 1970s in San Francisco. The film follows the investigation led by two detectives and a cartoonist who becomes obsessed with solving the case. With its gripping storyline and intense performances, Zodiac keeps viewers on the edge of their seats as they try to unravel the mystery of the notorious serial killer.