Masters of Sex “Matters of Gravity” Season 3 Episode 5 August 9, 2015 Masters of Sex, News The Showtime TV show Masters of Sex “Matters of Gravity” Season 3 Episode 5 airs Sunday August 9 at 10pm et/pt. In tonight’s episode, Johnson’s parents arrive unannounced. Masters takes on a promising patient. Show Summary: MASTERS OF SEX stars Michael Sheen and Lizzy Caplan as real-life pioneers of the science of human sexuality, William Masters and Virginia Johnson. Their research touched off the sexual revolution and took them from a midwestern teaching hospital to the cover of Time magazine and multiple appearances on Johnny Carson’s couch. He is a brilliant scientist out of touch with his own feelings, and she is a single working mother ahead of her time. The series chronicles their unusual lives, romance, and unlikely pop culture trajectory. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Google+ (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Pocket (Opens in new window)