7.7/10338 votes#1 - Freefall
Season 4 Episode 1 - Aired 9/11/2016
In the wake of their fallout, Masters and Johnson search for purpose in a world without one another and look to work as their personal lives crash down around them. Libby finds herself alone for the first time since her marriage and discovers some unexpected allies. Season premiere.
Director: Colin Bucksey
Writer: N/A
7.7/10309 votes#2 - Inventory
Season 4 Episode 2 - Aired 9/18/2016
Masters and Johnson turn to new partners in an effort to put the past behind them and focus on their expanding clinic. Given their fractured triangle, Libby reevaluates her relationship with Bill and Virginia.
Director: Jeremy Webb
Writer: N/A
7.7/10297 votes#3 - The Pleasure Protocol
Season 4 Episode 3 - Aired 9/25/2016
Masters and Johnson adjust to new partners, but their respective cases have them second-guessing the instinct to remain separated. A romantic prospect pushes Libby to embrace life as a newly single woman of the sexual revolution.
Director: Adam Arkin
Writer: N/A
8.7/10436 votes#4 - Coats or Keys
Season 4 Episode 4 - Aired 10/2/2016
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 evening.
Director: Colin Bucksey
Writer: N/A
8.1/10318 votes#5 - Outliers
Season 4 Episode 5 - Aired 10/9/2016
Johnson and Masters' troubles come to a head as the trial begins with Keller leading the charge. Virginia does her best to revive their career as Bill faces the reality of what the charges could mean for him, Johnson and the practice.
Director: Eric Tignini
Writer: N/A
8.3/10322 votes#6 - Family Only
Season 4 Episode 6 - Aired 10/16/2016
Johnson looks to get her relationship with Masters back on track while Masters does his best to find satisfaction elsewhere. Betty and Helen ready themselves for a new addition; Art and Nancy discuss the consequences of their party.
Director: Colin Bucksey
Writer: N/A
7.6/10280 votes#7 - In To Me You See
Season 4 Episode 7 - Aired 10/23/2016
Masters looks to groom Art as his protege in a new area of research as Johnson does her best to keep Nancy at arm's length. Betty seeks an unlikely source for assistance in her fight for equal rights to Helen's baby.
Director: Michael Apted
Writer: N/A
8.1/10298 votes#8 - Topeka
Season 4 Episode 8 - Aired 10/30/2016
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.
Director: Julie Anne Robinson
Writer: N/A
7.9/10286 votes#9 - Night and Day
Season 4 Episode 9 - Aired 11/6/2016
Masters and Johnson return from Topeka, each grappling with the trip's ramifications. 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.
Director: Karyn Kusama
Writer: N/A
8.0/10319 votes#10 - The Eyes of God
Season 4 Episode 10 - Aired 11/13/2016
Masters and Johnson work to save the practice from disintegrating in the face of insurrection within the clinic. As everyone in their lives either moves on or falls away, Bill and Virginia find solace in one another. Season finale.
Director: Michael Apted
Writer: N/A
The Best Episodes of Masters of Sex Season 4
Every episode of Masters of Sex Season 4 ranked from best to worst. Discover the Best Episodes of Masters of Sex Season 4!
William Masters and Virginia Johnson are real-life pioneers of the science of human sexuality. Their research touched off the sexual revolution and took them from...
Genre:Drama
Network:Showtime
Season 4 Ratings Summary
"Freefall" is the best rated episode of "Masters of Sex" season 4. It scored 7.7/10 based on 338 votes. Directed by Colin Bucksey and written by N/A, it aired on 9/11/2016. This episode is rated 0.0 points higher than the second-best, "Inventory".