Adrian Monk: Actually, the key piece of evidence was right in front of me the whole time. It was her.
Maria Schecter: Me? What?
Adrian Monk: I don't know how I could've missed it. Eileen Hill was a well-educated, professional woman. She was an adult. This woman, on the other hand, is a dolt. Adult, dolt. Adult, dolt. Adult, dolt, adult dolt...
Natalie: Mr. Monk, she's right here.
Adrian Monk: She knows she's an idiot. She can't even answer a phone. Have you ever tried talking to her? It's torture. Question, why would Eileen Hill hire a moron like that? The answer is simple and heart breaking. To convince you that she was pregnant. To manipulate you, to get you to leave your wife. She need to have a home pregnancy test come out positive. And for that, she need pregnant urine.
Paul Crawford: Pregnant urine?
Adrian Monk: That's why she advertised in a Lamaze class. She need to hire a pregnant woman, so she could give her a drug test. It was all about the drug test. It's the only possible reason why Eileen Hill - or anyone - would hire this person.
Natalie: He doesn't mean it.
Adrian Monk: Of course, you did have some trouble when you were dumping the body. You drove to the pier, you thought you were alone. But there were a couple tourists nearby. Did they see you? Did they take a picture? You probably weren't sure, but you couldn't take a chance.
Paul Crawford: Still waiting for some proof, Mr. Monk. Real evidence.
Adrian Monk: You mean, like this? Chalmers of London. Imported. Custom made. Just like the one that was around Eileen Hill's neck. Sheriff.
Sheriff: Mr. Crawford, would you come with us, please?
Paul Crawford: Yeah.