A beautiful executive (guest star Beau Garrett) with an apparent heart problem turns out to be lacking in the metaphorical heart department, as Thirteen (Olivia Wilde) discovers when a test reveals she doesn't feel emotion. As House's (Hugh Laurie) team looks for a link between her mental and physical symptoms, House reaches out to a former medical-school classmate (Ray Abruzzo) whom he wronged and gets a series of surprises in "Remorse."