In House M.D., which season introduced the character Lawrence Kutner?

Season four introduced Lawrence Kutner in House M.D.

Kutner, played by Kal Penn, joins House’s newly rebuilt diagnostic team after the original fellows move into different roles. House selects members through a competitive and unconventional process, turning recruitment into a major storyline early in the season.

Kutner is notable for his enthusiasm, willingness to attempt risky ideas, and interest in difficult diagnostic puzzles. His arrival belongs to the transition between House’s original team and the later group that also included Thirteen and Taub.

The character’s storyline later took a dramatic turn, but that event does not mark his introduction. Viewers may also confuse his debut with the arrival of other fourth-season team members, since several doctors entered the series during the same recruitment arc.