Description by couchtuner for The Simpsons Season 21 Episode 22 : 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.
Watch It Here : The Simpsons Season 21 Episode 22 The Bob Next Door
