| "500 Keys" | |
|---|---|
| The Simpsons episode | |
| Episode no. | Season 22 Episode 21 |
| Directed by | Bob Anderson |
| Written by | John Frink |
| Production code | NABF14 |
| Original air date | May 15, 2011 |
| Guest appearance | |
| |
| Episode features | |
| Chalkboard gag | "It's Kristen Schaal, not Kristen Schall" (first broadcast only) "Guinea pigs should not be used as 'guinea pigs'" (subsequent transmissions) |
| Couch gag | Everyone and everything is represented as a word cloud. |
"500 Keys" is the twenty-first and penultimate episode of the twenty-second season of the American animated television series The Simpsons. It first aired on the Fox network in the United States on May 15, 2011. It was written by John Frink and directed by Bob Anderson.[1]
In this episode, the Simpson family has adventures with the keys they have hoarded over the years, which leads Lisa to a mystery at Springfield Elementary. Albert Brooks made a cameo as Hank Scorpio. The episode received mixed reviews