Adrian Monk: Mr. Johansen, listen to me! Dr. Scott killed Dr. Whitcomb. And I know how he did it. He checked himself in as a patient. He knew this hospital. He knew there had been a renovation. So he made sure that at one time, his room was connected to your room. At about 2:00, he made his move. He came in here through the supply closet. He knew you'd be sleeping. He probably prescribed your sedatives.
Hank Johansen: As a matter of fact, he did.
Adrian Monk: Right, then he put his monitor on your chest. He took the oxygen tank, and then he went downstairs. After the murder, he came back here, put his monitor back on, and snuck back into his room. It was perfect. Your heartbeat was his alibi. So, what do you think?
Hank Johansen: I'll tell you what I think. I owe you an apology.
Adrian Monk: Really?
Hank Johansen: Yeah, that would explain everything.
Adrian Monk: Yes.
Hank Johansen: You know, you really are a great detective.
Adrian Monk: But I need proof.
Hank Johansen: Yeah, that's the thing. You need proof.
Adrian Monk: Yeah. I've got it. I've got it. Okay, if I'm right, which, you know, I am, for about ten minutes, during the murder, your heartbeat, and Dr. Scott's heartbeat, are the exact same heartbeat. All I have to do is find those cardiograms.
Hank Johansen: Yeah. Good thinking. You better go. It's very exciting.
Adrian Monk: Yeah. I better use the door.