Overview
When the Simpsons discover a collection of keys to every door in Springfield, Lisa stumbles upon an eerie hidden classroom beneath Springfield Elementary School. When she shares her discovery with Principal Skinner, the secret room mysteriously disappears and he takes the only key away. A determined Lisa uses her detective skills to lead her back to the room to solve an old school mystery.
-
22 - 1Elementary School Musical September 26, 2010
-
22 - 2Loan-a-Lisa October 03, 2010
-
22 - 3MoneyBART October 10, 2010
-
22 - 4Treehouse of Horror XXI November 07, 2010
-
22 - 5Lisa Simpson, This Isn't Your Life November 14, 2010
-
22 - 6The Fool Monty November 21, 2010
-
22 - 7How Munched Is That Birdie in the Window? November 28, 2010
-
22 - 8The Fight Before Christmas December 05, 2010
-
22 - 9Donnie Fatso December 12, 2010
-
22 - 10Moms I'd Like to Forget January 09, 2011
-
22 - 11Flaming Moe January 16, 2011
-
22 - 12Homer the Father January 23, 2011
-
22 - 13The Blue and the Gray February 13, 2011
-
22 - 14Angry Dad: The Movie February 20, 2011
-
22 - 15The Scorpion's Tale March 06, 2011
-
22 - 16A Midsummer's Nice Dream March 13, 2011
-
22 - 17Love Is a Many Strangled Thing March 27, 2011
-
22 - 18The Great Simpsina April 10, 2011
-
22 - 19The Real Housewives of Fat Tony May 01, 2011
-
22 - 20Homer Scissorhands May 08, 2011
-
22 - 21500 Keys May 15, 2011
-
22 - 22The Ned-liest Catch May 22, 2011