Who is the hero? Who is the threat? What is the truth?

These are the questions Showtime hopes viewers ask throughout Homeland, the upcoming drama that stars Clare Danes as a CIA agent who wonders whether a newly-released POW is actually a spy.

It's intense stuff, and sure to be controversial stuff once the October 2 premiere airs. Below, we've given readers a sneak peek at that episode, as Danes' Carrie Mathison questions Damian Lewis' Sergeant Brody.