Rene AuberjonoisCourtney B. VanceShowtime‘s period drama continues to add to its sophomore-season cast. Courtney B. Vance and Rene Auberjonois have joined Masters Of Sex in guest roles. Vance (FlashForward, Law & Order: Criminal Intent) will recur as Dr. Hendricks, head of an African-American hospital in St. Louis whose goal is to racially integrate his hospital, and Auberjonois (Warehouse 13, Boston Legal) will play Dr. Papanikolaou, inventor of the Pap smear. Season 2 of the series starring Michael Sheen and Lizzy Caplan premieres July 13 after the season premiere of Ray Donovan.

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