I watched the DVD of Zodiac last night and had a question: I don’t quite understand what happened in one scene and probably won’t have the chance to watch it again. It’s the scene where Graysmith (Jake Gyllenhaal) is terrified over being in the basement with Bob Vaughn, the theater operator he’s become convinced is either in cahoots with the Zodiac killer or else is the Zodiac killer, who the (drunken) handwriting expert has said has very close handwriting (not close enough to identify but too close to rule out), and who claims he lives alone yet footsteps are heard overhead. It’s a very nervewracking scene (especially when Graysmith is stupid enough to go into the guy’s basement) but then it’s totally dropped- he goes back to the Arthur Leigh Allen investigation and Vaughn and his unseen buddy Rich are completely dropped from the plot.
Was Vaughn strictly a red herring? Or was he supposed to be a copycat murderer? Just a weird-ass? If anybody’s read Graysmith’s book I was wondering if they could shed some more light.