Stamile is best known as McDreamy's other ladyfriend, Nurse Rose, on Grey's Anatomy. She will play pharmaceutical rep Charlotte Perkins, who sues her employer when learns she's being phased out for the company's younger reps, even though she's only in her 30s.
Guy, who played Southern belle Whitley on A Different World, will play Nona Daniels, the judge presiding over the case.
The episode is slated to air in August, and the new season kicks off Sunday, June 6 at 9/8c.
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