A familiar face will be popping up at Seattle Grace before Grey's Anatomy goes on hiatus at the end of the season. Kate Walsh, a.k.a. Addison Montgomery, M.D., will return to the medical drama when her character makes a visit to the Emerald City. It'll be for just one episode, though. ABC has already picked up Kate's spin-off series, Private Practice, for the fall.

Executive producer/writer Shonda Rhimes confirmed that Kate Walsh will return to Grey's Anatomy for a guest bit this spring, but a definite date has not been pinned down. Five new episodes of GA are set to air starting April 24.