Plot hole: Barry gets killed violently at the pageant. So obviously there should be blood everywhere. When the police go up to the crime scene, they find nothing. There's no way the killer had time to clean up anything, let alone drag away Barry's body without someone seeing him. And blood starts dripping after the police leave the scene.
Plot hole: There's no way the fisherman got Max's body in and out of the trunk in that small amount of time and somehow opens the trunk even when it shows Julie shutting the trunk and running with her keys.
Plot hole: David Egan's obituary states he was in his twenties when he died, much younger than Ben Willis, the actual hit-and-run victim. This should have clued in that David was not the person they ran over.