Watch a Preview of Showtime's Homeland

Entertainment September 26, 2011 AT 8:55AM By Allison Corneau

On Showtime's new series Homeland, CIA agent Carrie Mathison (Claire Danes) has quite the job to do: Discover just who Marine Sgt. Nicholas Brody really is.

PHOTOS: More hot fall shows

As the above sneak preview shows, Mathison faces opposition from her colleagues when she believes Brody, viewed as a war hero after returning from Afghanistan alive despite being declared dead, may be working for Al Qaeda.

Watch more of Us Weekly's sneak preview of Homeland -- from the producers of 24 -- above before the series premieres October 2 at 10 p.m. (EST) right after Dexter.

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