Kate Walsh revealed on Wednesday that she will be appearing in one more episode in 's current season — its 18th — in a cheeky Instagram post.
Walsh, who appeared in a handful of episodes earlier this season, will return for the May 5 installment.The Instagram video opens with the makeup-free actress walking down a hallway dressed in an oversized sweater, wide-legged pants and sandals, before stopping and retreating back to where she came from, only to reappear again with a fitted dress, white doctor's coat, heels and stethoscope.
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