User blog comment:Johnearis.gregorio/District Victim, Killer, Innocent or No Show?/@comment-4578647-20131127232618

The thing is between Serena, Howard or Adam bentley because  the killer always appear in the first case of the district a district killer never appears in the second on others (judging criminal case nature, case ending  in "2" always is the first, and the death of rosa wolf doesn't count, so that saves tony marconi) martha victim, and as other users said, serena killer