Laila Robins and Corey Stoll have been added to the cast of Homeland’s fourth season. 

Robins will join as a regular in the role of Martha Boyd, United States Ambassador to Pakistan. Stoll will guest star as Sandy Bachman, CIA Chief of Station in Pakistan. 

The series, which recently relocated production from the U.S. to Cape Town, South Africa, begins shooting at the end of the month and is expected to return to Showtime in the fall.