Laila Robins and Corey Stoll have both landed key roles on Homeland Season 4.

The actress (Damages, Person of Interest) will come on board as a series regular, portraying the character of Martha Boyd, the United States Ambassador to the Islamic Republic of Pakistan.

She is described in a press release as a put together professiona, with a "ship-to-ship voice and the personality to match."

Stoll (House of Cards, The Strain), meanwhile, will guest star as Sandy Bachman, the CIA Chief of Station in Pakistan.

He's a rising star in the Agency’s firmament and will appear in multiple episodes.

Homeland Season 4 starts production later this month in Cape Town, South Africa. It will premiere this fall.

Until then, you can catch up and watch Homeland Season 3 online.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.