An elusive serial killer known as the Zodiac terrorizes the San Francisco Bay in the late 1960s, while detectives aim to stop him before he claims more victims. Based on a true story.

THE ZODIAC takes a different look at the famous Zodiac Killer case from other screen treatments of the murders. More than a simple crime story, the film is an emotional thriller focusing on the murders' impact on victims, their families and the wider community. The film follows a police detective and his son who become obsessed with the murders and endanger their family in the process.—Anonymous

On 20 December 1968, in Lake Helena, a couple of teenagers are brutally murdered by a killer while dating nearby the lake. The young Sergeant Matt Parish is assigned and becomes obsessed with the case, neglecting his wife Laura and son Johnny. On 04 July 1969, another couple is shot on the golf course of Vallejo, and the killer sends letters to three newspapers with a riddle and promising more murders. He kills again, and the police force is not able to arrest him. On 24 April 1978, he writes to a newspaper saying that he is waiting for a good movie about him.—Claudio Carvalho, Rio de Janeiro, Brazil