Instruct: Classify a given review into positive or negative sentiment.
Query: Nothing new in Graysmith's Zodiac Unmasked

Robert Graysmith has convinced himself that Leigh Allen was the Zodiac. The book is an interesting read but nothing more than a spin on very weak circumstancial evidence. I wonder why the 2 SFPD that confronted the Zodiac after the brutal murder were never able to indentify Allen as the Zodiac. No prints, nothing close to suggesting Allen wrote the letter and cryptograms, nobody placing him anywhere near the scene of any of the crimes. They just never had even close to a case but Graysmith actually belives that he has uncovered the deceased Zodiac. I am not convinced.