Audra McDonald will guest-star on an upcoming season 4 episode of CBS' The Good Wife.

McDonald will play Alicia's (Julianna Margulies) "nemesis" from their days at Georgetown law school, with the two rivals going toe to toe in the courtroom.

THR says that while McDonald has only booked one episode thus far, there's the possibility that she might return for other episodes.

She joins a short list of other black actresses who've been featured in the hit CBS series: Anika Noni Rose and Nicole Beharie.

In addition to The Good Wife, as already announced, Ms McDonald will return as Dr. Naomi Bennett in the series finale of Private Practice next week.

The Good Wife airs 9 pm, Sundays on CBS.