500 Keys
The Simpsons · Season 22 · Episode 21
After finding the keys to every door in Springfield, Lisa finds a hidden room beneath the elementary school.
Episode Details
Air date, runtime, timezone, and episode position.
Season
22
Episode
21
Air Date
15/May/2011
Air Time
20:00
Runtime
23 min
Overview
Episode summary.
After finding the keys to every door in Springfield, Lisa finds a hidden room beneath the elementary school.
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