
The Great Louse Detective
The Simpson family win a free spa weekend, and Homer is nearly killed when a mysterious figure locks him in a sauna. Chief Wiggum decides to hire someone who can think like a murderer in order to find one. Bart's mortal enemy Sideshow Bob is sent to live with the Simpsons so he can help find Homer's attempted killer. Bob and Homer track down the attempted murderer and discover that it is Frank Grimes, Jr., the son of a man that Homer drove to insanity (in the season eight episode "Homer's Enemy"). After Grimes is arrested, Bob tries to kill Bart, but he finds that he has "grown accustomed to [his] face" and cannot harm him.
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S14 E1
Treehouse of Horror XIII
The 13th Treehouse of Horror episode, consisting of three self-contained segments. Send in the Clones – Homer buys a hammock that can produce clones of himself. He creates numerous clones to help him around the house, but they soon overrun Springfield. The Fright to Creep and Scare Harms – Lisa petitions the town to get rid of their firearms after discovering the gravestone of a young man named William Bonney who died from gun violence. However, Lisa soon discovers that William Bonney is the real name of Western outlaw Billy the Kid, whose ghost, along with the ghosts of other infamous criminals, takes over the defenseless town. The Island of Dr. Hibbert – Dr. Hibbert invites the citizens of Springfield to his island resort, where he turns them into animals.

S14 E2
How I Spent My Strummer Vacation
A drunken Homer appears on the show Taxicab Conversations and rants about how awful his life as a husband and father is. Although his family is at first outraged, they realise that they do somewhat burden him and decide to make up for it by sending him to a Rock 'n Roll Fantasy Camp where he mingles with rock stars, including Mick Jagger and Keith Richards. The rock stars ask Homer to help out at a concert and, expecting that he will be allowed to perform, he accepts. Actually, they want him to test the microphones; however, a humiliated Homer grabs a guitar and starts playing.

S14 E3
Bart vs. Lisa vs. the Third Grade
The Simpsons buy a satellite television, which Bart spends so much time watching that he does not study for an important achievement test. He scores so low that Principal Skinner demotes him to third grade, while Lisa does so well that she is moved up to third grade. The two are placed in the same class and become rivals. During a trip to Capital City, they get separated from their class and are forced to help each other in order to find their classmates.

S14 E4
Large Marge
Thinking Homer does not find her attractive anymore, Marge decides to get liposuction, but instead receives breast implants. She becomes adored by many of the men in Springfield, and becomes a spokesmodel for trade shows. Meanwhile, Bart and Milhouse try to imitate a stunt they saw on an episode of Batman that guest stars Krusty the Clown. When the stunt ends badly, media watchdog groups blame Krusty, forcing the clown to make his show more safety-conscious and less fun.