Season one of Homeland follows a soldier, Sgt. Nicholas Brody (Damian Lewis) who returns home after 8 years of being a P.O.W and a CIA analyst, Carrie Matheson (Claire Danes), who thinks he's been turned and is involved in a plot to attack the USA.
This show successfully weaves action, suspense and drama, anchored in realistic performances. Damian Lewis is amazing for being able to convey so much emotion with a simple glance so that even though you're wondering about where his loyalty lies, you can't help but feel for him. Claire Danes is also superb as an over-zealous analyst who's trying to hide her own mental issues.
Homeland doesn't provide you with easy answers - it just guides you down a path where you have to make your own mind up as to what and who is right and wrong.