The Masters of Sex crew just got a whole lot bigger. Deadline reports Alysia Reiner, Jeremy Strong, an Ashley Zukerman have been cast in season four of the Showtime series.

As we reported earlier, season four will also feature Niecy Nash and Betty Gilpin in recurring roles.

From Deadline:

Reiner will play Anita. Outspoken, attractive, hyper-confident, in a Gloria Steinem way in her early days – she leads a feminist empowerment group and challenges Libby (Caitlin FitzGerald) to raise her consciousness as a woman in the late 60s. Strong will portray Art. A psychologist from the Kinsey Institute brought in to be Johnson’s new partner in the expanding practice. He’s smart, gregarious and open, creating a refreshing frankness in his and Virginia’s partnership. Zukerman is new clinic patient Gary Diebold, a tightly wound man upset that he no longer seems to pleasure his wife. Raised to be a “gentleman,” he just can’t understand why she wants him to be less “gentle” in the bedroom.”

Season four of Masters of Sex debuts on September 11th at 10 p.m. ET/PT. 

What do you think? Do you watch Masters of Sex? Are you excited for the new season?