This season’s theme, based on the way different episodes have focused on different members of Rick’s increasingly separated team, seems to be “divide and conquer.” And tonight, we focus on yet another individual, one who already has been responsible, this season, for saving the lives of Rick and the others. It’s Carol (Melissa McBride) – and tonight, we see flashbacks of her survival quest with Daryl (Norman Reedus), and follow the path that, eventually, leads her back to the ominous hospital, as seen in last week’s very effective cliffhanger.