One of Willie Nelson's staffers may have embezzled some money and Willie threatens to fire the guy if the books don't balance by that night. Later in the afternoon, the same staffer sees a sign to not use the front door, to come around to the side door. When he does he is shot and killed - the audience does not see the actual killing. When the audience rejoins the scene there is a blind woman screaming murder and Willie Nelson bending over the body. Complications ensue.
Willie Nelson being slobbered over by Monk - a huge fan - takes up a good part of the proceedings as does Willy Nelson performing. Nelson is an OK actor - he's done several movies and he never embarrassed himself, but he's not Tom Hanks either. There are some humorous parts - Monk is invited to perform with the band on clarinet, and a streaker turns up a couple of times even though this is not 1974. I'd say this is one of Monk's blander season one episodes, but the quirky Monk humor keeps it at a 6/10.