While the police, the FBI, the U.S. Navy, and random civilians try to break the code of the killer’s cipher, the killer sends another letter to the press. He gives himself a name, the Zodiac, and taunts the police departments that are unable to catch him. Within a few days, a pair of teachers...

Seven months after two teenagers are murdered outside Vallejo, California, the killer reemerges. He shoots two young people at a park on the outskirts of the city, but this time one of the victims survives. Shortly after the attack, the killer calls the Vallejo police department and sets in...

A few days before Christmas in 1968, two teenagers from Vallejo, California go on their first date. They park at a lover’s lane pullout off of a dark road outside of town. Within an hour, a stranger parks near their car. He forces the kids out of their car, and then shoots and kills them....