In House M.D., which actress portrayed the doctor known as Thirteen?

Olivia Wilde portrayed Dr. Remy Hadley, known by the nickname Thirteen, in House M.D.

Thirteen joined House’s diagnostic team during the fourth season after an unusual hiring competition. The nickname refers to her position in that competition rather than her given name. Her reserved personality and strong diagnostic ability made her an important member of the ensemble.

The character’s story includes Huntington’s disease, a hereditary neurodegenerative disorder. Thirteen’s possible future illness affects her relationships, medical choices, and attitude toward uncertainty. The storyline also helped distinguish her from other team members.

Olivia Wilde played Thirteen from season four onward, with a temporary absence while the character was imprisoned. Jennifer Morrison played Allison Cameron, Amber Tamblyn played Martha Masters, and Anne Dudek played Amber Volakis; all are associated with House M.D. but played different doctors.