Allison Cameron is leaving House in November 2009. She's taking the show's moral center with her.
UPDATE: She's been booked to return in the spring of 2010!
Is this the beginning of the end? Chase and Cameron disagree over how to treat an African dictator; which, according to rumors, will lead to the latter leaving the show.
Allison Cameron works in the ER. She's much happier there than she was as a member of House's team, though she returns to the latter early in season six.
Cameron pleads with House not to ask a patient to essentially kill himself in this scene from "Simple Explanation." The main storyline of the hour, however, was Kutner's suicide.