Michael Sheen and Lizzy Caplan to Star in Showtime's Masters of Sex

Lizzy Caplan, Michael Sheen Michael Sheen and Lizzy Caplan will play the leads in Masters of Sex, Showtime announced Thursday.Check out the rest of today's newsThe pilot will follow the relationship of 1960s human sexuality pioneers William Masters (Sheen) and Virginia Johnson (Caplan). Based on Thomas Maier's acclaimed 2009 book about the couple, the project is written by Michelle Ashford (The Pacific) and directed by John Madden (Shakespeare in Love).Get the scoop on pilot seasonSheen, who co-starred in Woody Allen's Midnight in Paris, is known for his performances in The Queen and Frost/Nixon. Caplan has appeared in Mean Girls, True Blood, and most recently, New Girl.Masters of Sex will begin production in NY later this year.