Playback serverIf a title won’t play, switch servers.
The Simpsons
Season 22 · Episode 21
500 Keys
7.023mMay 15, 2011
After finding the keys to every door in Springfield, Lisa finds a hidden room beneath the elementary school.
Episodes
- Episode 1Elementary School Musical
- Episode 2Loan-a-Lisa
- Episode 3MoneyBART
- Episode 4Treehouse of Horror XXI
- Episode 5Lisa Simpson, This Isn't Your Life
- Episode 6The Fool Monty
- Episode 7How Munched Is That Birdie in the Window?
- Episode 8The Fight Before Christmas
- Episode 9Donnie Fatso
- Episode 10Moms I'd Like to Forget
- Episode 11Flaming Moe
- Episode 12Homer the Father
- Episode 13The Blue and the Gray
- Episode 14Angry Dad: The Movie
- Episode 15The Scorpion's Tale
- Episode 16A Midsummer's Nice Dream
- Episode 17Love Is a Many Strangled Thing
- Episode 18The Great Simpsina
- Episode 19The Real Housewives of Fat Tony
- Episode 20Homer Scissorhands
- Episode 21500 Keys
- Episode 22The Ned-liest Catch