Kjell Qvale was a Norwegian-American business executive born in Trondheim, Norway on July 7th 1919, who established a business in San Francisco and resided near the final confirmed Zodiac murder of Paul Stine on October 11th 1969. He lived at 3636 Jackson Street, a residence that overlooked the Presidio Park, and the last place Zodiac was observed heading by eyewitnesses reported in the San Francisco Chronicle on October 12th 1969. The Zodiac would eventually seize his moment and escape from the park as the motorcycles were circling. But did he escape from West Pacific Avenue via the gate to the rear of 3634 Jackson Street and view the unfolding events from the safety of his home.
To answer these pertinent questions and many more about Kjell Qvale being the infamous Zodiac Killer, follow the link provided.
Amazon books- 'The Inconceivable Double Life of a Notorious Serial Killer-The Hunt for Zodiac'.