Yes, "Zodiac" is based on a true story. The film, directed by David Fincher and released in 2007, chronicles the real-life events surrounding the Zodiac Killer, a serial murderer who operated in Northern California during the late 1960s and early 1970s. The movie follows journalists and police as they attempt to uncover the identity of the killer, who taunted authorities with cryptic letters and ciphers. The Zodiac's identity remains officially unsolved, adding to the film's intrigue and historical significance.

"Zodiac" is acclaimed for its meticulous attention to detail, rooted in David Fincher's direction and a compelling screenplay based on real events. The film effectively builds tension through its exploration of obsession, as characters delve into the unsolved Zodiac murders. Its strong performances, particularly by Jake Gyllenhaal, Robert Downey Jr., and Mark Ruffalo, add depth to the narrative. The film's atmospheric cinematography and haunting score enhance its psychological impact, making it a gripping and thought-provoking examination of fear, paranoia, and the pursuit of truth.

In the movie "Zodiac," directed by David Fincher, the identity of the Zodiac killer remains ambiguous and is never definitively revealed. The film, based on real events and the graphic novel by Robert Graysmith, follows the investigation into the Zodiac killer's crimes in the San Francisco Bay Area during the late 1960s and early 1970s. While several suspects are presented, including Arthur Leigh Allen, the film concludes without confirming any one individual as the killer, reflecting the unresolved nature of the case.

"Zodiac," directed by David Fincher, is not a traditional horror film but can be quite unsettling. It is a psychological thriller based on the real-life Zodiac Killer case, focusing on the obsession of journalists and police as they try to uncover the identity of the killer. The tension and atmosphere, along with the depiction of gruesome murders, contribute to a sense of dread. While it may not feature jump scares typical of horror films, its chilling themes and meticulous detail create a haunting experience that can be quite scary for viewers.