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After returning from New York, Masters and Johnson find that their life's work is in jeopardy while under scrutiny.

Masters of Sex

Full Ten Court

Masters, Johnson, Logan and his wife meet for dinner in New York; at home, Libby faces an accusation that could devastate her family.

Party of Four

Johnson has an objection to Masters' program following missteps in the protocol; the men in Libby's life want to please her on her birthday.

Through a Glass, Darkly

Libby tries to set Paul up with a friend; Masters continues the surrogacy program; Lester volunteers as the first male surrogate.

High Anxiety

Virginia goes to Las Vegas with Dan Logan; Masters begins the surrogacy program; Libby makes peace with her past and current relationships.

Surrogates

Masters and Johnson are interviewed by a national news magazine when they take on an exotic new patient.

Monkey Business

Masters and Johnson take on a famous couple looking to revitalize its sex life; Tessa learns what Virginia's childhood must have been like; Masters tries to connect with Johnny.

Two Scents

Virginia's parents arrive unannounced; Libby and Masters learn that Johnny has been bullied; Masters takes on a promising fertility patient.

Matters of Gravity

Masters seeks advice on convincing Johnson to rededicate herself to the study; a familiar face returns to the clinic; Virginia is distracted by news of Henry; Libby tries to help Paul and Joy.

Undue Influence

Masters and Johnson want to capitalize on their burgeoning fame once their book is released; Tessa begins to feel the effects of her mother's new notoriety.

The Excitement of Release

The book nears its release date; Masters takes on a high-profile fertility patient; Virgina and Libby come to terms with their roles in Bill's life.

Three's a Crowd

Masters and Johnson prepare to publish their study; Virginia faces parenting struggles; Libby pulls herself out of a depression.

Parliament of Owls

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Scientists William Masters and Virginia Johnson were pioneers of the study of human sexuality.

S3 E11 | Party of Four

E12 | Full Ten Court

E11 | Party of Four

E10 | Through a Glass, Darkly

E9 | High Anxiety

E8 | Surrogates

E7 | Monkey Business

E6 | Two Scents

E5 | Matters of Gravity

E4 | Undue Influence

E3 | The Excitement of Release

E2 | Three's a Crowd

E1 | Parliament of Owls