You really should start from the beginning. The first 4(?) seasons are on Netflix. Start and enjoy the ride. You will catch up in no time and this series is going to be around for awhile.
I enjoy The Talking Dead too. I don't know if that's on Netflix and I think it would be some trouble trying to tie them up. The Talking Dead has some fascinating insight and theories about why the characters do what they do from the writers, producers, actors and famous fans like Conan O'Brien last week.
Probably someone new that will lead them to the next "safe zone"... it's not Carol, because why would she be hiding from people she knows? I doubt it's Morgan... if I were writing the show, I would definitely give Morgan a better entrance than that.