The Simpsons - Season 20 - Eps 13: Gone Maggie Gone
Lisa infiltrates a convent in order to steal back Maggie who was accidentally taken in by nuns. While in the convent, Lisa uncovers a series of cryptic clues leading to a hidden jewel in Springfield. With help from resident history buffs Principal Skinner and Comic Book Guy, Lisa sets off to find the coveted prize. But Springfield's Freemasons are also hot on the trail of the jewel, and Lisa must race against them to find the jewel and rescue Maggie.
About The Simpsons

Title: The Simpsons
First Air Date: 1989-12-17
Last Air Date: 2025-05-18
Status: Returning Series
Rating: 8.015/10 (from 10248 votes)
Language: EN
Seasons: 37
Total Episodes: 786
Network: FOX
Genres: Family, Animation, Comedy
Production Companies: Gracie Films, 20th Century Fox Television, 20th Television Animation, 20th Television
Synopsis
Set in Springfield, the average American town, the show focuses on the antics and everyday adventures of the Simpson family; Homer, Marge, Bart, Lisa and Maggie, as well as a virtual cast of thousands. Since the beginning, the series has been a pop culture icon, attracting hundreds of celebrities to guest star. The show has also made name for itself in its fearless satirical take on politics, media and American life in general.
Cast

Dan Castellaneta
Homer Simpson / Abe Simpson / Barney Gumble / Krusty (voice)

Julie Kavner
Marge Simpson / Patty Bouvier / Selma Bouvier (voice)

Nancy Cartwright
Bart Simpson / Nelson Muntz / Ralph Wiggum (voice)

Yeardley Smith
Lisa Simpson (voice)

Hank Azaria
Moe Szyslak / Chief Wiggum / Apu / Comic Book Guy / Carl (voice)

Harry Shearer
Ned Flanders / Mr. Burns / Smithers / Skinner / Lenny (voice)