The Simpsons - Season 22 Episode 21 : 500 Keys 2024
8.014/10 by 9587 users
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.
- Released: Jan 01, 1970
- Runtime: 00:22:14 minutes
- Genre: Family, Animation, Comedy
- Stars: Dan Castellaneta, Julie Kavner, Nancy Cartwright, Yeardley Smith, Hank Azaria, Harry Shearer
- Network: FOX
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Se-22 Ep-1. Elementary School Musical 2010-09-26
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Se-22 Ep-2. Loan-a-Lisa 2010-10-03
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Se-22 Ep-3. MoneyBART 2010-10-10
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Se-22 Ep-4. Treehouse of Horror XXI 2010-11-07
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Se-22 Ep-6. The Fool Monty 2010-11-21
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Se-22 Ep-8. The Fight Before Christmas 2010-12-05
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Se-22 Ep-9. Donnie Fatso 2010-12-12
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Se-22 Ep-10. Moms I'd Like to Forget 2011-01-09
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Se-22 Ep-11. Flaming Moe 2011-01-16
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Se-22 Ep-12. Homer the Father 2011-01-23
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Se-22 Ep-13. The Blue and the Gray 2011-02-13
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Se-22 Ep-14. Angry Dad: The Movie 2011-02-20
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Se-22 Ep-15. The Scorpion's Tale 2011-03-06
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Se-22 Ep-16. A Midsummer's Nice Dream 2011-03-13
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Se-22 Ep-17. Love Is a Many Strangled Thing 2011-03-27
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Se-22 Ep-18. The Great Simpsina 2011-04-10
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Se-22 Ep-20. Homer Scissorhands 2011-05-08
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Se-22 Ep-21. 500 Keys 2011-05-15
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Se-22 Ep-22. The Ned-liest Catch 2011-05-22
