A doctor 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.
—Peter Harris