36 Season
776 Episode
The Simpsons - Season 22 Episode 21 500 Keys
After finding the keys to every door in Springfield, Lisa finds a hidden room beneath the elementary school.
- Year: 2024
- Country: United States of America
- Genre: Family, Animation, Comedy
- Studio: FOX
- Keyword: nuclear power plant, middle class, cartoon, satire, parody, dysfunctional family, school, social satire, family, adult animation, sitcom, kids, animation, witty, admiring
- Director: Matt Groening
- Cast: Dan Castellaneta, Julie Kavner, Nancy Cartwright, Yeardley Smith, Hank Azaria, Harry Shearer