Homeland continues to raise the stakes with “Q&A” as Brody (Damian Lewis) is interrogated, first by Peter Quinn (Rupert Friend) and then Carrie (Claire Danes). In a display of brilliant writing, directing, and acting, “Q&A” delves deeper into what makes its two main characters tick, while at the same time staying true to the terrorist story that has its viewers, me included, glued to their screens every Sunday night. As much as I loved last season’s “The Weekend,” another Carrie/Brody-centric episode, I think “Q&A” is even better, and will surely help to garner Emmy® awards for both leads next year.