 In the first of two pilot shows that ended the seventh season (somewhat odd considering "Ironside s" dicey status in the ratings), Desi Arnaz (in his last acting role) plays a doctor who is suspicious of the in-flight death of a private pilot. The quirky doctor, who likes to mix up various home-brewed alcoholic beverages such as green bourbon, and Ironside make a good team as they try to figure out what would cause the pilot s heart attack at the controls (his wife brought the plane down with much difficulty). The only major clue is a thermos with a glass inside, which shattered while the plane was still in the air.