THE SIMPSONS “500 Keys” Season 22 Episode 21 Photo

Check out a photo from THE SIMPSONS Season 22 Episode 21 titled "500 Keys" which airs Sunday May 15 at 8pm on FOX. 

Episode Synopsis: THE SIMPSONS "500 Keys" Season 22 Episode 21 – When the Simpsonsdiscover a collection of keys to every door in Springfield, Lisa stumbles upon an eerie hidden classroom beneath Springfield Elementary School in the all-new "500 Keys" episode of THE SIMPSONS airing Sunday, May 15 (8:00-8:30 PM ET/PT) on FOX. Read More...


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