The Simpsons Se21 Ep22 The Bob Next Door

The Bob Next Door is the twenty-second episode of Season 21. It aired on May 16, 2010. The episode was written by John Frink and directed by Nancy Kruse. Kelsey Grammer reprises his role as Sideshow Bob. Simon Rouse guest stars Walt Warren

Bart becomes convinced that his new neighbor, Walt, is his archenemy, Sideshow Bob, disguised and back for revenge. But when Marge tries to convince Bart otherwise by taking him to the state penitentiary, a disturbing truth is revealed, leading to danger for the spiky-haired boy.