Story highlights Two new actors are joining the show

Season 4 moves the action overseas

Production kicks off soon in South Africa

Showtime is sharing a few pieces of intel about "Homeland:" Two new roles have been cast for the upcoming fourth season.

Corey Stoll — who earned a Golden Globe nomination for his role on "House of Cards" and whose credits include "The Normal Heart" and "Midnight in Paris" — will guest-star as Sandy Bachman, the CIA chief of station in Pakistan who's a rising star within the agency. The number of episodes Stoll will appear in is being kept under wraps.

In addition, Laila Robins will join the cast as a series regular in the role of Martha Boyd, U.S. ambassador to Pakistan. Martha is described as "professional and put together, with a ship-to-ship voice and the personality to match." Robins, who appeared in multiple episodes of "Bored to Death," "Law & Order," and "The Sopranos," also starred in the big-screen comedy "Planes, Trains, & Automobiles."

Season 4 moves the action overseas as Carrie Mathison (Claire Danes) returns to the Middle East as chief of station. Mandy Patinkin, Rupert Friend, Nazanin Boniadi, are among the cast returning for the new season, which kicks off production in South Africa later this month and will hit the air this fall.