The Simpsons - Season 20 Episode 13
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.
First Air Date : 1989-12-17
Last Air date : 2024-10-27
Runtime : 57 minutes
Genre : Family, Animation, Comedy
Cast : Dan Castellaneta, Julie Kavner, Nancy Cartwright, Yeardley Smith, Hank Azaria, Harry Shearer
Crew : Danny Elfman (Main Title Theme Composer)
Quality : 
Subtitles :
- Season 20 : Episode 12008-09-28
- Season 20 : Episode 22008-10-05
- Season 20 : Episode 32008-10-19
- Season 20 : Episode 42008-11-02
- Season 20 : Episode 52008-11-09
- Season 20 : Episode 62008-11-16
- Season 20 : Episode 72008-11-30
- Season 20 : Episode 82008-12-07
- Season 20 : Episode 92009-01-25
- Season 20 : Episode 102009-02-15
- Season 20 : Episode 112009-03-01
- Season 20 : Episode 122009-03-08
- Season 20 : Episode 132009-03-15
- Season 20 : Episode 142009-03-22
- Season 20 : Episode 152009-03-29
- Season 20 : Episode 162009-04-05
- Season 20 : Episode 172009-04-19
- Season 20 : Episode 182009-04-26
- Season 20 : Episode 192009-05-03
- Season 20 : Episode 202009-05-10
- Season 20 : Episode 212009-05-17
