Overview
"Krusty Gets Busted" is the twelfth and penultimate episode of the first season of the American animated television series The Simpsons. It originally aired on the Fox Network in the United States on April 29, 1990. The episode was written by Jay Kogen and Wallace Wolodarsky, and directed by Brad Bird. In the episode, Krusty the Clown is convicted of armed robbery of the Kwik-E-Mart and imprisoned. Convinced that Krusty has been framed, Bart and Lisa investigate the crime and learn that Krusty's sidekick, Sideshow Bob, is the culprit.
This episode marks the first full-fledged appearance of Kent Brockman, and Kelsey Grammer makes his first guest appearance on the show as the voice of Sideshow Bob.
Plot
Patty and Selma visit the Simpson family to show them slides of their last trip to Yucatán. Homer is asked by Marge to stop by the Kwik-E-Mart on the way home from work to buy some ice cream, where he sees a figure resembling Krusty the Clown committing a robbery. Soon, Krusty is arrested, and after Homer identifies him at a police lineup and in the courtroom, Krusty is found guilty and imprisoned, upsetting Bart. Naturally, the public is shocked and outraged by Krusty's seeming criminal turn, throwing Springfield into chaos. Apu begins marketing a 'clown repelling' machine gun, whilst Reverend Lovejoy arranges a bonfire where the town's residents destroy Krusty's merchandise. As a result of Krusty's absence, his sidekick Sideshow Bob becomes the new host of his show, now called The Side-Show Bob Cavalcade of Whimsy and retooled to focus on education and classic literature while retaining The Itchy & Scratchy Show. Refusing to accept that his idol could have committed the crime, Bart enlists Lisa's help to prove Krusty's innocence.
At the crime scene, Bart and Lisa recall the robber read a magazine and used a microwave oven, which Krusty could not have done as he is illiterate and has an artificial pacemaker which requires him to avoid microwave radiation. When Bart and Lisa visit Sideshow Bob to learn whether Krusty had any enemies, he gives them tickets to his show. During the live broadcast, Bart is invited on stage with Bob, who dismisses Bart's points about the microwave and magazine.
From Wikipedia (CC BY-SA 4.0).