Olivia Wilde played Remy Hadley, known by the nickname Thirteen, on House M.D.
Thirteen joined House’s diagnostics team during the fourth season after the department’s original team was replaced through a competitive selection process. Her nickname comes from the number she was assigned during that competition, and it became her most familiar name within the hospital.
The character is a physician specializing in internal medicine and is portrayed as private, intelligent, and guarded. Her story includes a family history of Huntington’s disease, which becomes an important part of her emotional arc and medical decisions.
Thirteen is often confused with Cameron, another female doctor on House’s team, but Cameron was played by Jennifer Morrison. Wilde remained part of the series’ recurring ensemble for several seasons and also directed an episode near the end of the show’s run.