The House M.D. episode in which House teaches three patient cases as a lecture is titled “Three Stories.”
“Three Stories” is the 21st episode of the first season and was written by David Shore. In the episode, House gives medical students a diagnostic lecture based on three cases. The structure gradually reveals that one case is connected to the injury that caused House’s chronic leg pain.
The episode uses a non-linear narrative and shifts between House’s lecture and flashbacks. It became one of the most acclaimed episodes of the series because it combines medical reasoning with important background about House’s disability and his relationship with Stacy Warner.
The title refers to the three case narratives presented during the lecture, not to three seasons or three members of House’s team. The episode also won the Primetime Emmy Award for Outstanding Writing for a Drama Series, making it a major early milestone for the show.