Leighton Meester is the actress who portrayed Ali, a young woman who became infatuated with House in two episodes in Season 3. Leighton made her first major acting appearance on an episode of Law & Order in 1999.

Ali is a 17-year-old girl who became infatuated with House during the early part of Season 3. She is portrayed by actress Leighton Meester. Ali first came into contact with House when she came with her father, who was suffering from the common cold, to the clinic.

House meets a girl (played by Gossip Girl's Leighton Meester) during one of his clinic duties, she ends up becoming obsessive and stalks him until Cuddy has ...

" Informed Consent " is the third episode of the third season of House and the forty-ninth episode overall. The episode aired on Fox on September 19, 2006. House 's ketamine treatment has worn off, which means he has to resort to the use of his cane as a walking aid.

Sep 19, 2006 · Informed Consent is a third season episode of House which first aired on September 19, 2006. The team struggles to diagnose a famous scientist who decides he is ready to die. When the patient refuses to consent to tests, House promises to …

"Lines in the Sand" is the fourth episode of the third season of House and the fiftieth episode overall. The episode aired on Fox on September 26, 2006.

Sep 19, 2006 · Informed Consent: Directed by Laura Innes. With Hugh Laurie, Lisa Edelstein, Omar Epps, Robert Sean Leonard. House and his team face a lot of moral dilemmas when a patient wants them to help him end his life.

When doctors are unable to diagnose why a severely autistic boy screams loudly for no apparent reason, House takes the case. As the boy's condition worsens, it becomes obvious that House relates to the boy because he has no social niceties.