House: Season 4, Episode 5

4 - 5: Mirror Mirror

Foreman returns to Princeton-Plainsboro and is assigned to oversee House's candidates. A man is mugged and suffers from a respiratory arrest. Though he has no memories of who he is, he can read the personality of the most dominant person in the room, applying it to himself to create a temporary identity. House becomes intrigued by the accuracy of this judge of character and manipulates the patient to judge others, while a team member wonders if House is more dominant than Cuddy.