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 Annaleigh Ashford Guest Star Brian Howe Guest Star Elizabeth Dennehy Guest Star Sara Rae Foster Guest Star April Parker Jones Guest Star Ruby Lewis Guest Star Nicholle Tom Guest Star Ellen Wroe Guest Star Michelle Ashford Executive Producer, Writer Sarah Timberman Executive Producer Carl Beverly Executive Producer Judith Verno Executive Producer Michael Dinner Director