Nicholas D’Agosto as Dr. Ethan Haas, Michael Sheen as Dr. William Masters, Lizzy Caplan as Virginia Johnson, Teddy Sears as Dr. Austin Langham and Caitlin Fitzgerald as Libby Masters in Masters of Sex (season 1) – Photo: Erwin Olaf/SHOWTIME – Photo ID: MOS1_PR04_WAITSIX_4C_300