A school project on genealogy leads Albert to confront his dark past. As the Ingalls help Albert with the project, Charles and Caroline decide to adopt the young lad. Then, Albert's biological father Mr. Quinn shows up.

Cast: Michael Landon, Karen Grassle, Melissa Gilbert, Melissa Sue Anderson, Rachel Lindsay Greenbush, Sidney Greenbush, Richard Bull, Alison Arngrim, Scottie MacGregor, Jonathan Gilbert, Matthew Labyorteaux, Lucy Lee Flippin, Ketty Lester, Ken Letner, Richard Lockmiller