Carrie needs Allison's help. Quinn's plans change. Who's the hero – who's the threat? When MIA Marine Sgt. Nicholas Brody returns home to a hero's welcome after eight years in enemy confinement, brilliant but volatile CIA agent Carrie Mathison isn't buying his story. She believes that Brody has been turned and is now working for Al Qaeda. What follows is a dangerous game of cat and mouse with nothing short of American national security at stake. Claire Danes, Damian Lewis and Mandy Patankin star in the provocative, suspenseful new Showtime Original Series HOMELAND, from Executive Producers of "24".