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Season guide

Masters of Sex: Season 1

12 episodes Premiered Sep 29, 2013 Updated Jul 22, 2026

Masters of Sex season 1 premiered on September 29, 2013, and concluded on December 15, 2013. The season is centered around the pioneering study of human sexuality conducted by William Masters and Virginia Johnson in 1956. Masters' wife Libby tries to conceive a child to save her marriage. Dr. Ethan Haas works under the supervision of Dr. Masters and deals with societal changes. University Provost Barton Scully strugg

Season overview

Masters of Sex season 1 premiered on September 29, 2013, and concluded on December 15, 2013. The season is centered around the pioneering study of human sexuality conducted by William Masters and Virginia Johnson in 1956. Masters' wife Libby tries to conceive a child to save her marriage. Dr. Ethan Haas works under the supervision of Dr. Masters and deals with societal changes. University Provost Barton Scully struggles to support his protege William Masters while dealing with a personal secret.

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Episodes

S1·E1

Pilot

Sep 29, 2013 · 60 min

Dr. William Masters, Washington University’s foremost OB/GYN, runs a successful medical practice by day and conducts a secret study of human sexuality by night. Former nightclub si

S1·E2

Race to Space

Oct 6, 2013 · 60 min

On the heels of Masters’ proposal that they participate in the sexual response study, Johnson considers the best course of action to keep her job – only to find she no longer has o

S1·E3

Standard Deviation

Oct 13, 2013 · 60 min

Masters and Johnson continue their research in the brothel but skewed data confirms that Masters must get the study back into the hospital. At the hospital, Johnson is surprised to

S1·E4

Thank You for Coming

Oct 20, 2013 · 60 min

With the study back in the hospital, Masters and Johnson recruit new participants on campus. But Johnson is shocked when her ex-husband George, who’s crashing on her couch, wants t

S1·E5

Catherine

Oct 27, 2013 · 60 min

When Masters and Johnson expand the study to include couples, they discover that the science of sex is easily complicated by the mystery of attraction. Johnson tries to connect wit

S1·E6

Brave New World

Nov 3, 2013 · 60 min

In the aftermath of the miscarriage, Libby and Masters travel to Miami for some much needed rest and relaxation, but Masters is drawn back into his work by a sexually adventurous c

S1·E7

All Together Now

Nov 10, 2013 · 60 min

Masters and Johnson continue their sexual response study – now as participants – but Johnson fears their work may be interfering with Masters’ home life. Libby pressures Dr. Haas t

S1·E8

Love And Marriage

Nov 17, 2013 · 60 min

Masters and Johnson decide that the best way to record their study findings is to film them, but to do so they have to enlist outside help. Johnson redoubles her efforts to get a c

S1·E9

Involuntary

Nov 24, 2013 · 60 min

When Masters and Johnson decide to film external reactions in the study, they must convince Lester and Jane that their footage won’t cross the line into pornography. Haas and Vivia

S1·E10

Fallout

Dec 1, 2013 · 60 min

The hospital takes part in a nationwide civil defense drill, and the heightened atmosphere escalates conflicts among the staff. A former study participant reveals she’s pregnant an

S1·E11

Phallic Victories

Dec 8, 2013 · 60 min

With Johnson no longer on his team, Masters accepts Libby’s offer to help compile the study work for a hospital-wide presentation. But when Masters sees another doctor’s presentati

S1·E12

Manhigh

Dec 15, 2013 · 60 min

Masters’ work on human sexuality culminates with a hospital-wide presentation of his and Johnson’s research findings. But when Masters attempts to push the envelope with the extern