Adrian Monk: And what's all this?
Captain Stottlemeyer: These are rocks from the garden. Killer left them like this.
Lieutenant Disher: It's a message. He's toying with us. Some sort of code, but I haven't been able to figure it out yet.
Adrian Monk: You think the killer stopped here in plain view of the neighbors, went rooting around in the garden, collected a few rocks and then arranged them carefully on the grass?
Captain Stottlemeyer: What do you think?
Adrian Monk: I think he was looking for a hide-a-key.
Sharona: I found it.