Showtime has released a one-two combo of images and trailers for their upcoming debut shows Masters of Sex and Ray Donovan. Starring Lizzy Kaplan and Michael Sheen as real-life pioneers of the study of human sexuality, Masters of Sex follows the lives of Virginia Johnson and William Masters as their work sparks the sexual revolution and catapults them into fame.

Ray Donovan stars Liev Schreiber in the title role as a problem-solver for the rich, famous and powerful in Los Angeles. When his father (Jon Voight) is unexpectedly released from prison, he and his family find themselves in the cross-hairs. Hit the jump to check out the new images and trailers for both Showtime series.