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 efforts of a cartoonist and a journalist who become obsessed with solving the mystery of the Zodiac killer's identity. As they delve deeper into the case, they uncover a web of cryptic clues and terrifying encounters that keep them on the edge of their seats. With its atmospheric storytelling and gripping performances, Zodiac is a must-watch for true crime enthusiasts.