Quote from Lieutenant Disher in Mr. Monk and Sharona
Lieutenant Disher: Yeah, but, Sharona, you got to admit, if Monk thinks your uncle's running some kind of a scam, he's probably running some kind of scam. Sharona: Randy, Adrian is not- He's not infallible. He's been wrong before. Remember the ski instructor? Adrian said he was the guy, and it ended up being his twin brother. Do you remember that one? Lieutenant Disher: Yeah, no, he was the guy, remember? There was no brother. He was pretending to be his own twin. Sharona: Well, I still don't believe it.