Adrian Monk: The man we saw that night, the man in the box seats, had a wristwatch, remember? We saw him checking it. John Hannigan doesn't wear a wristwatch. The man we saw in the mezzanine was not John Hannigan. It was the bathroom attendant. They switched places. Here's what happened. Hannigan needed a dupe an accomplice. He tricked Gilson into helping him. He must've said something like, "Could you do me a favor? This is a two-hour show. There's no intermission. I need a cigarette break, but I can't be seen leaving. Could you take my place for a couple of minutes?" When the lights went down, they switched places for eight, maybe ten minutes. Just long enough for Hannigan to run two blocks and throw Callie Esterhas off the balcony.
Natalie: Excuse me. May I say something? I knew it, I knew it, I knew it, I knew it! I got to call Julie.
Lieutenant Disher: Natalie, we can't prove it. Can we?
Captain Stottlemeyer: He's right. All we have is some nicotine gum and a wristwatch. Hannigan's just gonna lawyer up. He'll deny everything.
Adrian Monk: I know. I know, you're right. Where's the proof? [Monk smiles]