Krusty Gets Busted is the twelfth episode of Season 1. It aired on April 22, 1990. The episode was written by Jay Kogen and directed by Brad Bird. Kent Brockman and Scott Christian make their first appearances on The Simpsons in this episode. Kelsey Grammer makes his first appearance on the show as Sideshow Bob.
Homer witnesses a robbery at the Kwik-E-Mart, and he idenitifies Krusty the Clown as the culprit. Krusty is arrested, and replaced on the show by Sideshow Bob. Lisa and Bart are adamant that Krusty is innocent, so they examine the evidence and they conclude that he was framed after finding several things to prove his innocence. Bart thinks the real criminal was Sideshow Bob, who admits to it and is sent to jail.