Arnold's Hero is the sixth episode of Season 2 of Diff'rent Strokes and the twenty-ninth episode overall. The episode was directed by Gerren Keith. It originally aired on October 24, 1979 on NBC.


Arnold wants to know where babies come from, but no one will give him a straight answer until one of the other tenants in the building, a woman whose pregnancy sparked Arnold's curiosity, complains to Mr. Drummond.

Note: This is the first episode to be aired on Wednesday nights.