The Simpsons Season 22 Episode 21 500 Keys ( Air Date 2011-05-15 ) Genre Animation, Comedy category. Overview "After finding the keys to every door in Springfield, Lisa finds a hidden room beneath the elementary school.".
The Simpsons Season 22 Episode 21 500 Keys
8.023/10 by 11017 users
- Watch: The Simpsons Season 22 Episode 21 500 Keys on CWR-CRB
- Stars: Dan Castellaneta, Julie Kavner, Nancy Cartwright, Yeardley Smith, Hank Azaria, Harry Shearer
- Director: Bonita Pietila
