This is the new, complete, single-book edition If you previously read the three separate books, you do NOT need to buy this one again According to the actual police department files and evidence from the original murder cases, there was no "Zodiac Killer," only some phony letters to the SF Chronicle claiming credit for some unrelated murders, followed by an exploitative book full of falsehoods by Robert Graysmith (real name: Robert Smith, Jr). This book thoroughly debunks Graysmith's 1986 book ZODIAC, explores in detail the cultural and literary environment that inspired the original Zodiac hoax, and explains what really happened in each murder, who real suspects were, what the real evidence was--and who REALLY wrote the "Zodiac Killer" letters