The Simpsons S22E21
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The Simpsons

S22E21 500 Keys

2011-05-15

When Lisa discovers a set of keys that unlocks every door in Springfield, she stumbles upon a secret chamber hidden beneath the elementary school.

Season 22 Episodes

1
Elementary School Musical
2010-09-26
 2
Loan-a-Lisa
2010-10-03
 3
MoneyBART
2010-10-10
 4
Treehouse of Horror XXI
2010-11-07
 5
Lisa Simpson, This Isn't Your Life
2010-11-14
 6
The Fool Monty
2010-11-21
 7
How Munched Is That Birdie in the Window?
2010-11-28
 8
The Fight Before Christmas
2010-12-05
 9
Donnie Fatso
2010-12-12
 10
Moms I'd Like to Forget
2011-01-09
 11
Flaming Moe
2011-01-16
 12
Homer the Father
2011-01-23
 13
The Blue and the Gray
2011-02-13
 14
Angry Dad: The Movie
2011-02-20
 15
The Scorpion's Tale
2011-03-06
 16
A Midsummer's Nice Dream
2011-03-13
 17
Love Is a Many Strangled Thing
2011-03-27
 18
The Great Simpsina
2011-04-10
 19
The Real Housewives of Fat Tony
2011-05-01
 20
Homer Scissorhands
2011-05-08
 21
500 Keys
2011-05-15
 22
The Ned-liest Catch
2011-05-22