Quote from Lieutenant Disher in Mr. Monk and the Class Reunion
Lieutenant Disher: Captain? The lapel pin. I just remembered where I saw it. Captain Stottlemeyer: Where? Lieutenant Disher: Just now at my desk. Captain Stottlemeyer: No, I mean where- Tell me about the pin, Randy. Lieutenant Disher: Monk. He's been wearing the same pin all week for his 25th college reunion. Captain Stottlemeyer: I think you're right. Did the victim go to Berkeley? Lieutenant Disher: No, she worked there. She was a nurse in the university clinic for, like, 20 years. Captain Stottlemeyer: But she didn't graduate, so this isn't her pin. Lieutenant Disher: The killer. Captain Stottlemeyer: It fell off the killer. Which means the killer is at the reunion with Monk?