Robert Graysmith (Zodiac)
The original Zodiac book contains several date and location changes.
Analysis:
Those changes were intentionally made to make it difficult to identify the subjects of the book.
Graysmith mentions a hidden road, that if you follow, will lead you to Fresno St. 24 blocks later.
Analysis:
The road Graysmith was talking about is Tennessee St. At the time he was researching his book, the intersection of Tennessee St. and Columbus Pkwy was hard to see at night. There was no traffic light at the three-way intersection, the area was somewhat secluded and trees obscured the view even more. Graysmith's claim is not a lie but merely his own opinion. The same applies to his thought that Zodiac actually drove down that street after the Blue Rock Springs attack.