S22 E21
Status
Continuing
Next episode
in 13 days
Airs
Sundays 8:00 PM on FOX

Season 22  "500 Keys"  22x21

Aired 8 years ago - May 15, 2011

When the Simpsons discover a collection of keys to every door in Springfield, Lisa stumbles upon an eerie hidden classroom beneath Springfield Elementary School. When she shares her discovery with Principal Skinner, the secret room mysteriously disappears and he takes the only key away. A determined Lisa uses her detective skills to lead her back to the room to solve an old school mystery.

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Recap of The Simpsons Season 22 Episode 21 (S22E21) - 2
At some point,
#2
Recap of The Simpsons Season 22 Episode 21 (S22E21) - 3
I can get back the angry letter I wrote to my boss.
#3
Recap of The Simpsons Season 22 Episode 21 (S22E21) - 4
Keys to the Duff Brewery?
#4
Recap of The Simpsons Season 22 Episode 21 (S22E21) - 5 #5 Recap of The Simpsons Season 22 Episode 21 (S22E21) - 6
The beech wood ager!
#6
Recap of The Simpsons Season 22 Episode 21 (S22E21) - 7 #7 Recap of The Simpsons Season 22 Episode 21 (S22E21) - 8
Oh.
#8
Recap of The Simpsons Season 22 Episode 21 (S22E21) - 9 #9 Recap of The Simpsons Season 22 Episode 21 (S22E21) - 10
People might be offended by your mild tastelessness!
#10
Recap of The Simpsons Season 22 Episode 21 (S22E21) - 11
Jesus cries blood every time you lie.
#11
Recap of The Simpsons Season 22 Episode 21 (S22E21) - 12
Just like yesterday and the day before that
#12
Recap of The Simpsons Season 22 Episode 21 (S22E21) - 13 #13 Recap of The Simpsons Season 22 Episode 21 (S22E21) - 14 #14 Recap of The Simpsons Season 22 Episode 21 (S22E21) - 15
It's like five classrooms in one.
#15
Recap of The Simpsons Season 22 Episode 21 (S22E21) - 16
And this tooth has no dentin!
#16
Recap of The Simpsons Season 22 Episode 21 (S22E21) - 17
They say they're going to.
#17
Recap of The Simpsons Season 22 Episode 21 (S22E21) - 18 #18 Recap of The Simpsons Season 22 Episode 21 (S22E21) - 19 #19 Recap of The Simpsons Season 22 Episode 21 (S22E21) - 20
Excuse me. Has anyone seen my toy?
#20
Recap of The Simpsons Season 22 Episode 21 (S22E21) - 21
Truly these band books deserve to be banned.
#21
Recap of The Simpsons Season 22 Episode 21 (S22E21) - 22 #22 Recap of The Simpsons Season 22 Episode 21 (S22E21) - 23 #23 Recap of The Simpsons Season 22 Episode 21 (S22E21) - 24
I oversee 14 schools, Seymour,
#24
Recap of The Simpsons Season 22 Episode 21 (S22E21) - 25 #25 Recap of The Simpsons Season 22 Episode 21 (S22E21) - 26 #26 Recap of The Simpsons Season 22 Episode 21 (S22E21) - 27
Oh! Oh, the Zoomanity!
#27
Recap of The Simpsons Season 22 Episode 21 (S22E21) - 28
How much?
#28
Recap of The Simpsons Season 22 Episode 21 (S22E21) - 29
How did this bookshelf get here so fast?
#29
Recap of The Simpsons Season 22 Episode 21 (S22E21) - 30
"The children are on bus 23."
#30
Recap of The Simpsons Season 22 Episode 21 (S22E21) - 31
Well, then you got one more mouth to feed.
#31
Recap of The Simpsons Season 22 Episode 21 (S22E21) - 32
Chief Wiggum, stop that train!
#32
Recap of The Simpsons Season 22 Episode 21 (S22E21) - 33
Oh, uh, hey, Maryann!
#33
Recap of The Simpsons Season 22 Episode 21 (S22E21) - 34
Yeah, I've been held back more times than I can count.
#34
Recap of The Simpsons Season 22 Episode 21 (S22E21) - 35
I'll tell you about Bus 23.
#35
Recap of The Simpsons Season 22 Episode 21 (S22E21) - 36
They'll have to take a more circuitous route.
#36
Recap of The Simpsons Season 22 Episode 21 (S22E21) - 37
could you pour it out and toss the bucket back up?
#37
Recap of The Simpsons Season 22 Episode 21 (S22E21) - 38 #38 Recap of The Simpsons Season 22 Episode 21 (S22E21) - 39
Original or 360?
#39
Recap of The Simpsons Season 22 Episode 21 (S22E21) - 40 #40 Recap of The Simpsons Season 22 Episode 21 (S22E21) - 41 #41 Recap of The Simpsons Season 22 Episode 21 (S22E21) - 42 #42 Recap of The Simpsons Season 22 Episode 21 (S22E21) - 43
I have to buy you a new anniversary present!
#43
Recap of The Simpsons Season 22 Episode 21 (S22E21) - 44
were swallowed up by the river.
#44
Recap of The Simpsons Season 22 Episode 21 (S22E21) - 45
that is your cue to start the damn car!
#45
Recap of The Simpsons Season 22 Episode 21 (S22E21) - 46
to improve the school.
#46
Recap of The Simpsons Season 22 Episode 21 (S22E21) - 47
we built the phony schoolrooms that you saw.
#47
Recap of The Simpsons Season 22 Episode 21 (S22E21) - 48
Otto, maybe it was wrong of us to let you think
#48
Recap of The Simpsons Season 22 Episode 21 (S22E21) - 49 #49 Recap of The Simpsons Season 22 Episode 21 (S22E21) - 50 #50