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On Masters of Sex Season 4 Episode 10, Masters and Johnson work to take down Nancy, while also preparing for their wedding.
On Masters of Sex Season 4 Episode 9, Bill struggles to figure out his relationship with Virginia. Meanwhile, Art overhears a devestating confession, and Louise falls off the wagon.
On Masters of Sex Season 4 Episode 8, Bill and Virginia investigate a competing clinic. Meanwhile, Nancy manipulates Art.
On Masters of Sex Season 4 Episode 7, Virginia and Nancy go undercover, and Bill reaches out to an old flame.
On Masters of Sex Season 4 Episode 6, Virginia attempts to repair her relationship with Bill. Meanwhile Libby finds herself on an unusual date, and Helen goes into labor.
On Masters of Sex Season 4 Episode 5, the trial begins against Johnson and Masters. Meanwhile, Bill and Libby have a heart to heart.
On Masters of Sex Season 4 Episode 4, unexpected pairings occur at a party thrown by Art and Nancy where the night's events may change everything going forward.
On Masters of Sex Season 4 Episode 3, Bill works on a case that makes him question his feelings for Virginia. Meanwhile, Libby meets a handsome stranger.
On Masters of Sex Season 4 Episode 2, Masters and Johnson take on new partners, while Libby finally reveals her truth.
On Masters of Sex Season 4 Episode 1, Bill and Virginia try to find a way to move forward in their professional lives as their personal lives fall apart.
