Aired: February 22, 2010 | Season: 21 | Episode: 13

Overview
Runtime: 23m
Directed by: Raymond S. Persi
Written by: Billy Kimball, Ian Maxtone-Graham
Guest stars: Wren T. Brown
Description
When Miss Hoover asks her students to research their family history, Lisa is horrified to discover that most of her ancestors were bad people – a motley crew of horse thieves and deadbeats. But while rummaging through the attic, Lisa happens upon a diary kept by her ancestor, Eliza Simpson. As Eliza’s story unfolds, Lisa learns that her family was part of the Underground Railroad, a group that helped slaves escape to freedom. Eliza recounts liberating a slave named Virgil, but when Lisa presents her findings at school, some of her classmates refute it, leaving Lisa determined to exonerate her family’s name.