It's never easy to determine who one can trust these days, a task exponentially more difficult in the intense world of Showtime's Homeland. The latest trailer for Season 3 has debuted, featuring Brody (Damian Lewis) claiming that he loves his country, Carrie (Claire Danes) maniacally defending Brody's claims of innocence and Saul (Mandy Patinkin revealing that he will stand by Carrie. Can anyone be trusted? We'll find out when Homeland returns with "Tin Man Down" on Sunday, September 29.