Ramone: So you are like a detective?
Natalie: Oh, he's the best detective in the world.
Adrian Monk: Maybe not the world. well, who's to say?
Jake Phillips: So what's going on, Columbo?
Adrian Monk: Okay, this is Joseph Moody's wheelchair. It was still in the garage.
Jake Phillips: Who?
Adrian Monk: The old man who used to live here. He fell down these stairs. He had a private nurse who said he walked up to that landing. But look. Here, here, here. Tire tracks. They're a perfect match. And this. Wallpaper. Look, you can see where it was ripped away. No, no, I think- I think she wheeled him up these stairs.
Jake Phillips: So you just put that together? Just like that? That's fantastic.
Adrian Monk: And this. Tribiteral. It's a new prescription. This is the stuff she said made him disoriented.
Natalie: It's never been opened. Do you think she killed him?
Adrian Monk: She lied about it. There must be a reason.