Factual error: In a couple of scenes, most notably the one where Graysmith drives his kid to school, there are newer cars in the background than the year it is supposed to be. In this scene the car is a 1971 Chrysler, when the scene takes place in 1969.
Zodiac (2007)
1 factual error - chronological order
Directed by: David Fincher
Starring: Robert Downey Jr., Jake Gyllenhaal, Mark Ruffalo, Brian Cox, Anthony Edwards
Continuity mistake: In the shot where Robert Graysmith goes to see Paul Avery on his boat, the pong game on the T.V. in the background goes from 15:9 to 14:9 back to 15:9 between shots.
Robert Graysmith: Just because you can't prove it doesn't mean it isn't true.
Dave Toschi: Easy, Dirty Harry.
More trivia for Zodiac
Question: Near the end of the film a high school year book is shown. What school is it from and what year?
Answer: Hogan High School, in Vallejo California. 1968.
Bishop73