Treehouse of Horror XXIII
A black hole threatens to swallow Springfield, Homer tries to find the source of paranormal activity, and a "Back to the Future" parody in which Bart keeps Marge from marrying Homer.
Episodes
21
The Saga of Carl 23
Homer, Moe, Lenny and Carl win $200,000 in the Springfield Lottery. But when Carl takes off to Iceland – his homeland – with all the winnings, the guys embark on a Nordic adventure to get the cash back.
22
Dangers on a Train 23
When Marge tries to buy Homer snack cakes for their anniversary, she winds up meeting a married man who shares a common love of British Television. Ignorant of all, Homer attempts to secretly construct a romantic anniversary train in the Simpsons back yard.
