Little House on the Prairie Season 4 Episode 19

Overview
Nels’ brother sends his 12-year-old son to Walnut Grove after repeated conflicts at home and school. When Mrs. Oleson interferes in her husband’s plans to rehabilitate his nephew, Nels asks Charles to step in and teach the boy some values.
Director: Michael Landon
Guest Star: Alison Arngrim, Hersha Parady, Jonathan Gilbert, michael-sharrett, Nehemiah Persoff
Episode Title: The Stranger
Air Date: 1978-02-13