Natalie: Mr. Monk, you're not a killer.
Adrian Monk: Are you sure?
Natalie: Yes, of course I am.
Adrian Monk: What if Harold is right? It all fits. I know 1,000 ways to kill people. And I have a motive. I admit it. I want Dr. Bell to myself.
Natalie: No, Mr. Monk, it couldn't be you. You have an alibi.
Adrian Monk: What alibi? I was here. I was alone.
Natalie: No, you weren't alone. You were with yourself.
Adrian Monk: I wasn't alone, I was with myself?
Natalie: Exactly. You would know if you were sneaking out and killing people. That's the kind of thing that people tend to remember.
Adrian Monk: Maybe not. I black out sometimes. You've seen it. Sometimes five hours go by, and I don't know where I've been.
Natalie: That's true, but it's always triggered by something, like you've seen yourself naked, or you saw a documentary on the Nature Channel. Just stop. Look at me! Look at me! It wasn't you. It couldn't have been you.