I'm surprised no one has said that Rock killed pshrynk. I have 2 reasons for this solution:
- The crime is Oedipal. Rock is Pshrynk's creation after all, and while this reason might seem nuts to most of us, it would have appealed to pshrynk (and his creation) because he is a psychiatrist.
- Rock needed the billable hours. This particular clue was set up long before the contest.
- Who hasn't wanted to kill their shrink?