- Home
- The Simpsons
- The Simpsons Season 22 Episode 21

The Simpsons Season 22 Episode 21
After finding the keys to every door in Springfield, Lisa finds a hidden room beneath the elementary school.
Serie: The Simpsons
Episode Title: 500 Keys
Air Date: 2011-05-15
Dallas
The world’s first mega-soap, and one of the most popular ever produced, Dallas had it all. Beautiful women, expensive cars, and men playing Monopoly with real buildings. Famous for one…
Falcon Crest
Falcon Crest is an American primetime television soap opera which aired on the CBS network for nine seasons, from December 4, 1981 to May 17, 1990. A total of 227…
Fievel’s American Tails
Fievel’s American Tails is an American/Canadian animated television series, produced by Steven Spielberg’s Amblimation animation studio, Nelvana, and Universal Cartoon Studios. It aired for one season in 1992, and continued…
Fantastic Four: World’s Greatest Heroes
Mr. Fantastic, the Invisible Woman, the Human Torch, and the Thing battle some of their greatest foes, including Doctor Doom, Ronan the Accuser, the Multiple Man, and Mole Man.
Whatever Happened to the Likely Lads
Whatever Happened to the Likely Lads? is a British sitcom which was broadcast between 9 January 1973 and 9 April 1974 on BBC1. It was the colour sequel to the…
The Misfit of Demon King Academy
Anos Voldigord was a tyrannical Demon King that eradicated humans, spirits, and even the gods, but became bored of eternal warfare and reincarnated with dreams of a peaceful world. However,…
Locke & Key
Three siblings who move into their ancestral estate after their father’s gruesome murder discover their new home’s magical keys, which must be used in their stand against an evil creature…
Dirt
Dirt is an American television serial broadcast on the FX network. It premiered on January 2, 2007 and starred Courteney Cox as Lucy Spiller, the editor-in-chief of the first-of-its-kind “glossy…
Aqua Teen Hunger Force
The surreal adventures of three anthropomorphic fast food items: Master Shake, Frylock and Meatwad, and their human nextdoor neighbor, Carl Brutananadilewski.
Suidooster
Suidooster is a South African television soap opera produced by Suidooster Films which revolves around a matriarch, her family, friends and the people of Suidooster, a small shopping and business…
The Andy Griffith Show
The Andy Griffith Show is an American sitcom first televised on CBS between October 3, 1960 and April 1, 1968. Andy Griffith portrays the widowed sheriff of the fictional small…
The Flash
When a bolt of lightening crashes through a police crime lab, a mix of electrically charged substances bathes chemist Barry Allen, transforming him into the fastest man alive–The Flash.