Season 04, Episode 10 – “A Private Affair”
Season 4 ends with Masters and Johnson working to save the practice from disintegrating in the face of insurrection within the clinic. Meanwhile, Bill and Virginia find solace in one another as everyone in their lives either moves on or falls away.
Season 04, Episode 09 – “Night and Day”
Masters and Johnson return from Topeka and grapple with the trip’s ramifications. Meanwhile, Art and Nancy look to tie up loose ends in order to have a fresh start; and Libby embarks on a road trip with Bram that changes her perspective.
Season 04, Episode 08 – “Topeka”
Masters and Johnson go on the road and pose as a couple to investigate practices at a competing clinic. While Bill and Virginia are away, Art, Nancy and Langham take advantage of their absence to further their own agendas.
Season 04, Episode 07 – “In To Me You See”
Masters looks to groom Art as his protégé in a new area of research, while Johnson does her best to keep Nancy at arm’s length. Elsewhere, Betty seeks an unlikely source to assist in her fight for equal rights to Helen’s baby.
Season 04, Episode 06 – “Family Only”
Johnson looks to get her relationship with Masters back on track, but Masters does his best to find satisfaction elsewhere. Meanwhile, Betty and Helen ready themselves for a new addition; and Art and Nancy discuss the consequences of their party.
Season 04, Episode 05 – “Outliers”
Johnson and Masters’ legal troubles come to a head as the trial begins with Keller leading the charge. Johnson, assuming they’re to be exonerated, does her best to revive their careers, while Masters faces the reality of what these charges could mean for him, Johnson and the practice.
Season 04, Episode 04 – “Coats or Keys”
Johnson, Masters, Libby and Keller wind up together at a party thrown by Art and Nancy. Pairings and perspectives shift as the night wears on, until the light of day exposes the consequences of the previous evening.
Season 04, Episode 03 – “The Pleasure Protocol”
Masters and Johnson adjust to new partners, but their respective cases cause them to second-guess the instinct to remain separated. Meanwhile, a romantic prospect pushes Libby to embrace life as a newly single woman of the sexual revolution.
Season 04, Episode 02 – “Inventory”
Masters and Johnson turn to new partners in an effort to put the past behind them and focus on their expanding clinic. Meanwhile, Libby reevaluates her relationship with Bill and Virginia.
Season 04, Episode 01 – “Freefall”
Season 4 begins with Masters and Johnson searching for purpose after their fallout and looking to work to save them as their personal lives crash down around them. Meanwhile, Libby finds herself alone for the first time and discovers some unexpected allies.