The Zodiac Killer did not wake up one day and victimize 7 people only to fall off the face of the earth afterwords. He had a beginning and an ending. I am working with handwriting identification on more than 20 crime sprees all over the US that suggests that the Zodiac Killer wasn't on his own agenda. Research is ongoing and ever evolving in this presentation. All information contained here is subject to change based on new evidence. The crimes listed within are circumstances that fell into my path as I researched the Zodiac Killer. They are unknown acts of violence and homicide that this killer may be responsible for based on proximity and evidence.