During the session with Dr. Nolan, House recounts the case of a woman (guest star Zoe McLellan) who arrives at the Princeton Plainsboro emergency room with an unexplained illness and amnesia.
Back in his own apartment, House finds his roommate from Mayfield, Juan "Alvie" Alvarez (guest star Lin-Manuel Miranda) has not only occupied the place but also sold several highly valuable items in order to finance some questionable redecoration.
Ultimately, House solves these problems by faking a DNA test, scientifically linking Alvie to his probably Puerto Rican mother.
However, when she is moved to the operating theater she happens to be pushed through some UV light, where House spots the remnants of a tattoo and diagnoses her as having an allergic reaction to the ink, with the allergy having been triggered by the patient's regular extreme long-distance running.
Critical response was from generally positive to muted, most reviewers noting the change in pace and the similarities to the episode Three Stories.
I enjoyed the switch in storytelling styles with flashbacks coming from an unreliable narrator, and I loved how Andre Braugher continued his role as both an advocate and adversary to House.
I must give it credit for trying something different and I could also watch Hugh Laurie and Braugher simply exchange home decorating tips for an hour.