Amber Tamblyn Amber Tamblyn

Amber Tamblyn has signed on for a multi-episode arc in the upcoming season of House, Fox announced Wednesday.

House, Lone Star to kick off Fox premiere week

She arrives as a brilliant and aggressive new team member. There's one snag: House (Hugh Laurie) hires her even though she's still a medical student and not technically allowed to practice medicine yet.

Has Dr. House found his new pet now that Thirteen (Olivia Wilde) has taken off? Not likely. Tamblyn's character will feel conflicted with House's morally and ethically ambiguous ways of practicing medicine.

Check out our day-by-day guide to all the networks' fall schedules

The 27-year-old actress — best known for her roles in the TV series Joan of Arcadia and The Sisterhood of the Traveling Pants films — most recently starred on The Unusuals on ABC.

Season 7 of House debuts Monday, Sept. 20 at 8/7c on Fox.