Preview of Tonight's 'Masters of Sex': Below the Belt

The second season of Showtime drama Masters of Sex continues on Sunday, September 14 at 10 p.m. ET/PT.

In this week's episode, titled "Below the Belt," Johnson (Lizzy Caplan) tries to find a cure for Masters' sexual difficulties; Masters (Michael Sheen) learns of a rival study and tries to brand his work; Flo (Artemis Pebdani) informs Langham (Teddy Sears) that he must have sex with her in order to keep his job; Barbara (Betsy Brandt) and Lester (Kevin Christy) connect over their shared sexual dysfunctions; Libby (Caitlin FitzGerald) asks Johnson to give her an alibi while she canvases a tenement for a rent strike with CORE.

Watch a sneak peek video below:

Preview of Tonight's 'Masters of Sex': Story of My Life

The second season of Showtime drama Masters of Sex continues on Sunday, September 7 at 10 p.m. ET/PT.

In this week's episode, titled "Story of My Life," Masters (Michael Sheen) bristles at Frank's (Christian Borle) insinuations about his and Estabrooks' (Ann Dowd) demons; Virginia (Lizzy Caplan) uses a patient's case history to gain advice from a psychiatrist; Betty (Annaleigh Ashford) and Masters try to remedy Lester's (Kevin Christy) impotence by hiring a prostitute; Barbara (Betsy Brandt) gets an unsettling diagnosis that threatens to expose a chain of secrets.

Watch a sneak peek video below:

'Masters of Sex' Preview: Mirror, Mirror

Photo Credit: Showtime

The sophomore season of Showtime's Masters of Sex continues on Sunday, August 31 at 10 p.m. ET/PT. Masters of Sex stars Michael Sheen and Lizzy Caplan as real-life pioneers of the science of human sexuality, William Masters and Virginia Johnson. Their research touched off the sexual revolution and took them from a midwestern teaching hospital to the cover of Time magazine and multiple appearances on Johnny Carson’s couch. He is a brilliant scientist out of touch with his own feelings, and she is a single working mother ahead of her time. The series chronicles their unusual lives, romance, and unlikely pop culture trajectory.

In this week's episode, "Mirror, Mirror," Johnson attempts to treat a woman on her own. Libby (Caitlin Fitzgerald) witnesses a hate crime.

Watch a sneak peek video below:

'Masters of Sex' Preview: Asterion

The sophomore season of Showtime's Masters of Sex continues on Sunday, August 24 at 10 p.m. ET/PT. Masters of Sex stars Michael Sheen and Lizzy Caplan as real-life pioneers of the science of human sexuality, William Masters and Virginia Johnson. Their research touched off the sexual revolution and took them from a midwestern teaching hospital to the cover of Time magazine and multiple appearances on Johnny Carson’s couch. He is a brilliant scientist out of touch with his own feelings, and she is a single working mother ahead of her time. The series chronicles their unusual lives, romance, and unlikely pop culture trajectory.

In this week's episode, "Asterion," Masters becomes impotent – and cuts off his sexual work with Johnson. Libby begs Bill to take money from his mother.

Watch a sneak peek video below:

'Masters of Sex' Preview: Blackbird

Courtney B. Vance as Charles Hendricks. Photo Credit: Michael
Desmond/Showtime

The sophomore season of Showtime's Masters of Sex continues on Sunday, August 17 at 9 p.m. ET/PT.

In this week's episode, "Blackbird," Hendricks bans Masters from using black participants in his study, but Masters contacts a journalist to aid his efforts. Meanwhile, Johnson is forced to accept DePaul’s choice to end her chemotherapy treatments; Gene learns the truth about Betty and Helen’s relationship; and Libby fires Coral after discovering she lied about Robert being her lover.

Show Summary: MASTERS OF SEX stars Michael Sheen and Lizzy Caplan

Watch a sneak peek video below:

'Masters of Sex' Preview: Dirty Jobs

Caitlin Fitzgerald as Libby Masters and Keke Palmer as Coral.
 Photo Credit: Michael Desmond/Showtime

The sophomore season of Showtime's Masters of Sex continues on Sunday, August 3 at 9 p.m. ET/PT.

Masters of Sex stars Michael Sheen and Lizzy Caplan as real-life pioneers of the science of human sexuality, William Masters and Virginia Johnson. Their research touched off the sexual revolution and took them from a midwestern teaching hospital to the cover of Time magazine and multiple appearances on Johnny Carson’s couch. He is a brilliant scientist out of touch with his own feelings, and she is a single working mother ahead of her time. The series chronicles their unusual lives, romance, and unlikely pop culture trajectory.

In this week's episode, "Dirty Jobs," Langham shares his suspicions about Masters and Johnson with DePaul.

Watch a sneak peek video below:

'Masters of Sex' Preview: Kyrie Eleison

Photo Credit: Michael Desmond/Showtime

The sophomore season of Showtime's Masters of Sex continues on Sunday, July 20 at 9 p.m. ET/PT.

Masters of Sex stars Michael Sheen and Lizzy Caplan as real-life pioneers of the science of human sexuality, William Masters and Virginia Johnson. Their research touched off the sexual revolution and took them from a midwestern teaching hospital to the cover of Time magazine and multiple appearances on Johnny Carson’s couch. He is a brilliant scientist out of touch with his own feelings, and she is a single working mother ahead of her time. The series chronicles their unusual lives, romance, and unlikely pop culture trajectory.

In this week's episode, "Kyrie Eleison," as Masters begins a new job, Virginia is torn between him and DePaul.

Watch a sneak peek video below:

MASTERS OF SEX Season Finale Sneak Peek

Allison Janney.  Photo Credit: Michael Desmond/Showtime

The excellent first season of MASTERS OF SEX wraps up on Sunday, December 15th at 10 p.m. ET/PT on Showtime.

In "Manhigh," Masters (Michael Sheen) presents his and Johnson's (Lizzy Caplan) findings.

Check out a sneak peek video from the season finale below in which Virginia wishes Bill and Libby good luck on their baby and the presentation:

MASTERS OF SEX "Phallic Victories" Sneak Peek

Julianne Nicholson as Dr. Lillian Depaul and Lizzy Caplan as
Virginia Johnson.  Photo Credit: Patrick Wymore/Showtime

The first season of MASTERS OF SEX continues on Sunday, December 8th at 10 p.m. ET/PT on Showtime.

In "Phallic Victories," Masters and Libby compile study information for a hospital-wide presentation; DePaul and Johnson travel to a medical convention and DePaul opens up on why her work on the Pap smear is important; Virginia's ex-husband returns and finds Ethan playing father to his children.

Check out a sneak peek video below:

MASTERS OF SEX "Fallout" Sneak Peek

Nicholas D'Agosto as Dr. Ethan Haas and Beau Bridges as Barton
Scully.  Photo Credit: Patrick Wymore/Showtime

The first season of MASTERS OF SEX, the best new series of 2013, continues on Sunday, December 1st at 10 p.m. ET/PT on Showtime.

In "Fallout," conflicts escalate at the hospital during a nationwide civil defense drill; a former study participant reveals that she is pregnant and wants to know the identity of the father; Masters and Johnson disagree over whether to maintain study confidentiality; Haas learns he has been denied a job at the hospital; Margaret Scully (Allison Janney) seeks answers about her husband's sexuality from an unlikely source.

Check out a sneak peek video below:

MASTERS OF SEX "Involuntary" Sneak Peek

Ann Dowd as Estabrooks Masters and Caitlin Fitzgerald as
Libby Masters. Photo Credit: Patrick Wymore/Showtime

The excellent first season of MASTERS OF SEX continues on Sunday, November 24th at 10 p.m. ET/PT on Showtime.

In "Involuntary," Haas and Vivian’s wedding plans get sidetracked, and Masters and Johnson discuss their results on involuntary actions during sex.

Elsewhere, Libby keeps a secret.

Check out a sneak peek video below:

MASTERS OF SEX "Love and Marriage" Sneak Peek

Finn Wittrock as Dale and Beau Bridges as Barton Scully.
Photo Credit: Michael Desmond/Showtime

The excellent first season of MASTERS OF SEX continues on Sunday, November 17th at 10 p.m. ET/PT on Showtime.

In "Love and Marriage," Masters (Michael Sheen) and Johnson (Lizzy Caplan) enlist outside help.

Meanwhile, Margaret Scully (Allison Janney) opens up to her husband (Beau Bridges), who battles his sexual desires.

Check out a sneak peek video below:

WATCH: Trailer For Showtime's MASTERS OF SEX

Photo Credit: Showtime

The 12-episode first season of Showtime's MASTERS OF SEX premieres Sunday, September 29 at 10 p.m. ET/PT. MASTERS OF SEX stars Michael Sheen and Lizzy Caplan, who will portray the real-life pioneers of the science of human sexuality, William Masters and Virginia Johnson.

The series chronicles the unusual lives, romance and pop culture trajectory of Masters and Johnson. Their research touched off the sexual revolution and took them from a mid-western teaching hospital in St. Louis to the cover of Time magazine. The show is an adaptation of Thomas Maier's book Masters of "Sex: The Life and Times of William Masters and Virginia Johnson, The Couple Who Taught America How To Love."

Check out the newly released trailer below: