Quote from Lieutenant Disher in Mr. Monk Takes the Stand
Adrian Monk: He confessed. Lieutenant Disher: To robbing the store. Adrian Monk: He confessed? Lieutenant Disher: Not to the murder. Adrian Monk: Randy, you know the law. If I go with you and I see something, then I might have to testify about it. And if I accuse someone, they could hire this Powell guy. They probably will. Lieutenant Disher: Well, I'm willing to take that chance. Adrian Monk: Why? Lieutenant Disher: Because he didn't do it.