Showtime just released a first combined trailer for its two new dramas Ray Donovan and Masters Of Sex, which will premiere next year. Ray Donovan stars Liev Schreiber as fixer Ray Donovan, who does the dirty work for LA’s top power players. Jon Voight plays his father. Masters Of Sex stars Michael Sheen and Lizzy Caplan as the real-life pioneers of the science of human sexuality, William Masters and Virginia Johnson.