Mother Simpson

Through a misunderstanding, Homer discovers that his mother is very much alive, but with a very shady past, and the FBI are eager to find her.

Bart Simpson, Homer Simpson, Marge Simpson, Lisa Simpson, Maggie Simpson, Grampa Simpson, Barney Gumble, Krusty the Klown, Groundskeeper Willie, Mayor Quimby, Hans Moleman, Sideshow Mel, Patty Bouvier, Selma Bouvier, Nelson Muntz, Todd Flanders, Ralph Wiggum, Kearney, Moe Szyslak, Chief Wiggum, Apu, Comic Book Guy, Cletus, Professor Frink, Montgomery Burns, Waylon Smithers, Ned Flanders, Kent Brockman, Reverend Lovejoy, Principal Skinner, Dr. Hibbert, Rainer Wolfcastle, Mother Simpson, Milhouse Van Houten, Rod Flanders, Jimbo Jones, Bill Gannon, Maude Flanders, Helen Lovejoy, Luann Van Houten, Miss Hoover

Blackboard Joke: None.

Couch Gag: The TV room is a bowling lane and the family are bowling pins.

Guest star Harry Morgan reprises his Bill Gannon role from "Dragnet."