What was the name of House M.D.’s first-season finale?

The first-season finale of House M.D. was titled “Honeymoon.”

“Honeymoon” is the twenty-second episode of season one. It focuses on Mark Warner, a man whose illness becomes the latest difficult diagnostic case while House faces major personal and professional developments.

The episode also advances the relationship between House and his former partner Stacy Warner. Stacy returns to Princeton-Plainsboro after her husband becomes ill, forcing House to confront unresolved feelings and tensions from their past.

Viewers sometimes confuse “Honeymoon” with “Everybody Lies,” which is the season-one penultimate episode, or with “Three Stories,” the season-one episode that uses a teaching-case structure. “Honeymoon” is the correct title for the finale and aired in May 2005.