Sideshow Bob appears in Bart's bedroom to murder him but Homer quickly comes to his son's rescue. He ties up Bob and the cops come to take him away. Bob swears vengeance on the man who put him there. Later that year, the family is attending Lisa's recital, little do they know that Bob is on the catwalk. As Homer is watching the concert, Bob drops an anvil on his head, sending him to the hospital and requiring emergency brain surgery. The surgery leaves homer brain dead.