One Night in October: A stunning new profile of the California Zodiac Executioner, his motive reveal

In October 1969 I was one of twenty-five or more San Francisco Police Department (SFPD) officers who responded to the murder of a Yellow Cab driver in the Presidio Heights district of San Francisco. Investigators later attributed the murder to the so-called Zodiac killer.
Long after my police career, I began studying five Zodiac cases, his phone calls, and his written communications. I concluded that the motive in four of the murder and attempted murder cases consisting of Lake Herman, Blue Rock Springs, Lake Berryessa, and the Presidio Heights district in San Francisco, involving a total of seven victims, were cases of displaced or redirected aggression. Follow my leads and come to your own conclusion.