"Homeland" season 4: Watch the first trailer

Carrie Mathison is back in action in the first look at the fourth season of Showtime's "Homeland."

A new trailer released Friday shows Carrie (Claire Danes) working in Pakistan in the aftermath of Nicholas Brody's (Damian Lewis) death at the end of season 3.

Mandy Patinkin and Rupert Friend are back as Saul Berenson and Peter Quinn, respectively, alongside cast newcomers like Corey Stoll ("House of Cards") as a station chief in Islamabad, Laila Robbins ("In Treatment") as the United States Ambassador to Pakistan and Suraj Sharma ("Life of Pi") as a Pakistani medical student who crosses paths with Carrie.

"Homeland" returns Oct. 5 on Showtime. Watch the teaser below: