The House M.D. episode featuring House's lecture called “Three Stories” is titled “Three Stories.”
“Three Stories” is the 21st episode of House M.D.'s first season. In the episode, Gregory House gives a teaching lecture about diagnosing leg pain, presenting three apparently separate patient stories. The structure allows the episode to reveal important information about House's own medical history while demonstrating the uncertainty and revision involved in diagnosis.
The episode is notable for its non-linear storytelling and its use of multiple perspectives. House's lecture begins as a medical teaching exercise, but the cases gradually become connected to his past. The episode received significant critical attention and won the Primetime Emmy Award for Outstanding Writing for a Drama Series.
The title can cause confusion because “Three Stories” describes both the lecture's format and the episode itself. It is not the name of a separate medical department or a season-long storyline. The episode aired during the show's first season, before the series had established all of its later cast and relationship developments.