Natalie: Oh, they're looking for the money, aren't they?
Adrian Monk: Yeah, the old man robbed those armored cars. He hid the money somewhere in this house. Forty years later, he's older, dementia sets in. He starts babbling about it to his private nurse. She killed him before he could start blabbing about it to somebody else.
Natalie: And she tells her friend, not-so-honest Jake.
Adrian Monk: Yeah, they were probably more than friends. They were probably sex lovers. That's what he's been doing here the whole time, Looking for the money.
Natalie: You're not gonna believe this. He's still not the worst contractor I've ever seen.