Bill (Michael Sheen) will be asking Ginny (Lizzy Caplan) to reflect on what is more important in the upcoming episode of Showtime's period drama series "Masters of Sex."

In "Undue Influence," Cartermatt reports that Bill will try to convince his partner to focus on their study and on him. The past weeks have been a whirlwind, with their careers soaring to new heights and their personal lives going topsy-turvy due to Ginny's unexpected pregnancy. Adding to the melee are their own families, who chose that opportune time to start getting problems.

Libby (Caitlin Fitzgerald), while trying to make her marriage work, will try to help Paul (Benjamin Koldyke) and Joy (Susan May Pratt) repair their chaotic lives. Tessa (Kayla Madison) will deal with her inner turmoil as her mother fails to notice how their home life is affecting her. The teen is also trying to make sense of the events that happened in the homecoming dance.

Meanwhile, a familiar face will return to the clinic, looking for help. TV Fanatic also reveals that Dan Logan (Josh Charles), the perfumier, will try a new marketing strategy to sell his fragrance lines. It appears that he will be capitalizing on the consumer's compassion. But how will his three research assistants, Marylynn, Maryann and Trudy, fit the scenario?

Last episode, Bill and Ginny were still trying to come to terms with their newfound fame after the publication of their book. Tessa also had to deal with the new situation, but since her mother was busy, she had to do some reflecting on her own. Libby, for her part, still believed that her marriage with Bill could work. But the more he shut her out of his life, the more she realized that maybe it was time to think of herself and her children first. Her next-door neighbor certainly did not help her resolve, sprouting radical thoughts on starting a new life without uncaring Bill.

"Masters of Sex" airs Sunday at 10 p.m. EST on Showtime.