“Bart the Murderer” is the fourth episode of Season 3. It first aired on October 10, 1991. The episode was written by John Swartzwelder and directed by Rich Moore. The episode features references to songs such as “Witchcraft” and “One Fine Day“, and the American television series MacGyver.
After having a very lousy day of school, Bart accidentally stumbles into `The Legitimate Businessman Social Club’, a mobster front. He becomes a bartender, but when he shows up late at work and blames Principal Skinner, Skinner disappears.