Warning: If you do not want to know about spoilers for season 4, then stop reading.
In a interview with CBR they asked Gale Annhurd about season 4 and she said "We are going to amp up the threat of the walkers, because they've started to seem like a manageable threat. They are not a manageable threat," Gale told CBR. "But, it is the people who you think you can trust who betray's you, that you have to fear. It is the monster inside you. We all have them. How do we keep them in check?"
Source and more: walking dead news feed
Streaming Options