Mr. Monk and the Red-Headed Stranger

S1, E12: An angry Willie Nelson accuses his road manager, Sonny Cross, of embezzlement just hours before making a San Francisco radio appearance. Sonny later arrives at the radio station to find a note summoning him to a side entrance. As Sonny disappears down an alley, two shots ring out, and an engineer throws open the side door to find a blind woman, Mrs. Mass, screaming hysterically -- and Willie Nelson hovering over Sonny's dead body. An injured Captain Stottlemeyer decides to put Lt. Disher in charge of the investigation, and Disher loses no time in calling in Adrian Monk.