The House M.D. episode in which House teaches three medical cases is titled “Three Stories.”
“Three Stories” is the 21st episode of the first season. In the episode, House gives a lecture to medical students by presenting three patients with leg pain. The narrative moves between the cases and House’s own medical history, gradually revealing why his leg is permanently damaged.
The episode was written by David Shore and directed by Paris Barclay. Its unusual structure allows the audience to compare diagnostic reasoning with the limits of memory and perspective. It also gives important background about House’s relationship with his chronic pain and disability.
The title refers directly to the three case narratives used in the lecture. It is not the series finale and should not be confused with other episodes built around House’s teaching or hospital lectures. “Three Stories” is widely regarded as one of the show’s defining early episodes.