Watch: "Homeland" season 3 premiere clips

Claire Danes as Carrie Mathison in "Homeland."

"Homeland" season 3 picks up with the world struggling to make sense of the CIA headquarters bombing and Carrie finds herself directly in the cross-hairs of a Senate Judiciary Committee that's looking for someone to blame in Sunday's sensational season premiere.

VIDEO - "Homeland" exclusive season 2 deleted scene

ETonline scored a pair of exclusive clips from "Tin Man is Down," which reveal a lack of loyalty among people Carrie trusted the most.

VIDEO - "Homeland" season 3 trailers

"I'm really excited about this season," star Mandy Patinkin told ETonline at Showtime's Pre-Emmy Party on September 21. "The writers have knocked it out of the park this season. I have not been disappointed in a single script. It's pretty exciting stuff. It keeps changing. It has quite a life of its own. It's like a great novel to me, and I encourage the audience to not be impatient, to keep reading chapter after chapter, and you'll be as surprised as I was."

"Homeland" premieres Sunday at 9 p.m. ET on Showtime.