I'm really busy this week, so very short reviews only.
As far as plot goes, "The Bullet in the Brain" is nothing special, with a scant amount of forensic work and interviews. It does, however, give us a close look at each character, bringing the Gravedigger, Max, and Caroline back for an emotional episode. Before sounding too positive with this change of pace from the Hannah stuff, I also have to note that we have to see what happens next before laying on the praise.
Score: 8.8/10