Larry Kane? Yeah, their are too many suspects and probably all kinds of lies from witnesses. Be great if they could unmask the POS.
The final suspect outside of Arthur Leigh Allen was Lawrence Klein, who went under the alias (one of many) Larry Kane. Kane had an extensive criminal background dating all the way back to the 1940s. The sister of Zodiac victim Darlene Ferrin made claims that Kane followed her sister for months leading up to the murder. In addition, the possible Zodiac abductee Kathleen Johns positively identified Kane as her abductor. He eventually died in 2010 in Reno, Nevada. So, while Zodiac focuses primarily on Arthur Leigh Allen, there were other suspects who fit the bill.