Masters of Sex” will be receiving two more doctors in the upcoming second season.

Courtney B. Vance and Rene Auberjonois have joined the season two cast of the Showtime drama series. Vance will play the recurring guest star role of Dr. Hendricks, the head of an African-American hospital in St. Louis whose goal is to racially integrate his hospital.

Auberjonois will be guest starring as Dr. Papanikolaou, a former professor of Dr. DePaul (Julianne Nicholson). DePaul and Virginia Johnson (Lizzy Caplan) hope Papanikolaou will endorse their screening program that uses the test named after him: the Pap smear.

Production on season two is underway in Los Angeles, and the series will return on July 13.