Quote from Lieutenant Disher in Mr. Monk Is On The Run (Part One)
Sheriff Rollins: Anything on those credit cards? Detective: No, sir. Sheriff Rollins: Make sure the hotel rooms are covered. Double-team the bus stations and the airport. Lieutenant Disher: Well, he's not going to the airport. Monk's afraid to fly. Sheriff Rollins: Well, maybe he figures we assume he won't fly, so he heads to the airport. Lieutenant Disher: Yeah, or maybe he knows we assume that he thinks he... He thinks he knows what... He's... He knows that we're... No, wait... I'll write it down.