Olivia Wilde will reprise her role of "Thirteen" one last time for the final episode of "House," Fox confirms to CNN.

As originally reported by TV Line, the star of "Tron: Legacy" and "Cowboys and Aliens," who played Dr. Remy "Thirteen" Hadley for three seasons (and a few episodes throughout the last two seasons), is set to appear in the May 21 series finale.

We last saw "Thirteen" back in October. Her Huntington's disease had been advancing, and House saw that she was happy with her girlfriend. Despite her interest in going back into medicine, he fired her because he didn't want her living out her remaining time working in the hospital.

At one point, House promised her that he would assist her in ending her life if she asked him to do so.

One might presume that the end of "House" might also be the end of "Thirteen's" life, but with a show this unpredictable, it's really anyone's guess.

Fans were heartbroken to hear last month that another former cast member, Lisa Edelstein, was not planning to return for the finale.

Are you more likely to watch the final episode of "House" because of Wilde's guest spot? Post a video response or let us know below.