DON'T MISS: "The Walking Dead" - Are you nervous? Of course you are. One of the most harrowing TV cliffhangers in recent memory finally gets resolved as the zombie mega-hit returns for its seventh season. When last seen, many of our intrepid survivors had just been captured by the ruthless villain Negan (Jeffrey Dean Morgan). Wielding a Louisville Slugger covered in barbed wire, he was poised to use one of them for batting practice. But who? We're about to find out - while peering through our fingers. 9 p.m. Sunday, AMC.