Zodiac: the serial killer who terrorized the US

In the late 1960s, the city of San Francisco was terrorized by one of the the most mysterious serial killers ever: the Zodiac killer. He killed people for no apparent reason, wrote to local newspapers to confess to the crimes and managed to confuse the authorities for decades. To this day, the question remains: who was the Zodiac killer? Discover the mysterious story of one of the greatest criminals in history!