New York City 1990 - an elderly man is shot and left for dead. Responding detectives think its a robbery gone wrong until a letter is found at the crime scene containing astrological signs and sinister imagery. Soon after similar correspondence is sent to the New York Post stating that three people have been gunned down based on their birth signs. The author taunts the police and promises that he will kill a total of twelve people - one for each sign of the Zodiac. Could he be the original Zodiac Killer?