 CONT: When showing the original murder in flashbacks, the killer is  standing five feet or more away from the body when he shoots him.  When Dennehy tells Dodd and the flashback is shown beneath the  bridge, the gun is aimed only a few inches from the previous bullet  hole. A gun fired that close would leave burn marks and gunpowder  residue on the victims head, which would be incongruous with the  eyewitness accounts of the actual murder.