Adrian Monk: I can't do it.
Natalie: Oh, Mr. Monk, come on.
Adrian Monk: I can't.
Natalie: Please.
Adrian Monk: Look, there's the captain's cane.
Natalie: Yeah, it's part of the ritual, because he didn't need it anymore. Please drink.
Adrian Monk: Natalie.
Natalie: What? What is it?
Adrian Monk: These pills. Half the bottles - more than half - are from the same pharmacy. There's something wrong here. Here, just put this in your bag. Let's take some more.
Katie Doyle: What are you doing?
Adrian Monk: I'm sorry, ma'am. I'm afraid you have to stay back. This may be a crime scene.
Katie Doyle: A crime scene?
Adrian Monk: Conspiracy. Probably fraud.
Katie Doyle: It isn't fraud. It was murder. This has gone long enough. It wasn't me. I didn't even know him then. Nine years ago, my fiance caught his business partner stealing money, and killed him.
Natalie: Your fiance?
Katie Doyle: Owen McCloskey. He filled those prescriptions.
Adrian Monk: The pharmacist.