Out of curiosity: Why do you think Fincher decides to show us the actual killings take place? These are the only scenes that are not from the point of view of Graysmith, Toschi, or Avery as far as I remember.

Also: Why does Fincher shoot the scene where Toschi discovers the cab shooting in handheld? This is pretty much the only handheld footage in the entire film, something that Fincher generally stays away from anyways. 

If anyone who sees this has any ideas I’d love to hear them. No matter what... this movie is brilliant.