House - 4x2 - The Right Stuff

House reluctantly agrees to interview potential new team members and does so in his own way. He calls in all 40 applicants and places each of them in a Darwinian trial period. As he tests them, and fires some along the way, he is approached by Greta, a NASA training program candidate, who is having neurological issues and begs House to help her in private so she can be accepted into the training program.

House takes Greta's case to his applicants, pitting them against one another as they compete to come up with an accurate diagnosis. Later, House is shocked when he sees what appears to be Cameron, Chase and Foreman in the hospital hallways.