Michael Sheen William Masters Actor Lizzy Caplan Virginia Johnson Actor Caitlin FitzGerald Libby Masters Actor Nicholas D'Agosto Ethan Haas Actor Teddy Sears Dr. Austin Langham Actor Beau Bridges Guest Star Heléne Yorke Guest Star Rose McIver Guest Star Finn Wittrock Guest Star Alan Ruck Guest Star Barry Bostwick Guest Star Ann Cusack Guest Star Caroline Lagerfelt Guest Star Joan Severance Guest Star Julianne Nicholson Guest Star Allison Janney Guest Star Michelle Ashford Executive Producer Sarah Timberman Executive Producer Carl Beverly Executive Producer Judith Verno Executive Producer Adam Davidson Director Lyn Greene Writer Richard Levine Writer