If you’re not caught up on “Homeland,” beware that there are spoilers ahead, i.e. in the very next sentence so stop reading now, you’ve been warned. When we last saw “Homeland”‘s Carrie Mathison, the bipolar CIA agent was mourning the death of her beloved tiny-lipped, ginger-haired, terrorist-sympathizing boyfriend Brody, expecting his child and preparing to take a new job as Station Chief in Istanbul. Fans were left wondering how the show would evolve now that it wasn’t going to be Brody-centric, and I’m afraid this teaser trailer for the fourth season doesn’t tell us much. Thankfully, we can take comfort in the knowledge that while Brody is six-feet-under, Saul Berenson and Peter Quinn still have Carrie’s back.