This episode is untypical for Monk. He's trying to solve the mystery of a missing granny, who has been kidnapped and a few days later she is released without a single scratch.
This time Monk did not work for money but he did it with the prospect of getting back into regular police service. But when it comes to the aptitude test his neuroses thwart him once again.
[Monk: You look familiar, Ronnie. Didn't I see you last week at the opera?
Abrash: The opera? What have you been smoking, man?
Monk: I've been smoking the truth, man!
Abrash: What are you guys doing? Good cop, crazy cop?]