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Aired Sunday June 26, 1:30pm - 1:55pmon Channel 4 +1

The Simpsons

Series 22 Episode 21: 500 Keys

The Simpsons uncover a large amount of keys, one of which Lisa discovers leads to a secret classroom at Springfield Elementary with a dark history involving Otto the bus driver.

Animated / Entertainment / Sitcom
Original air date
Cast and crew
  • Bob AndersonDirector
  • Dan CastellanetaHomer Jay Simpson/Barney Gumble/Grampa Simpson/Mayor Joe Quimby/Krusty the Klown/Groundskeeper Willie
  • Julie KavnerMarjorie Bouvier Simpson/ Patty Bouvier/Selma Bouvier/Grandma Jackie Bouvier
  • Nancy CartwrightBartholomew Jo-Jo "Bart" Simpson/Nelson Muntz
  • Yeardley SmithLisa Marie Simpson
  • Hank AzariaMoe Szyslak/Apu Nahasapeemapetilon/Chief Clancy Wiggum/Dr. Nick Riviera
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