The Walking Dead Season 4 SPOILERS [VIDEO]: New Sneak Peek Teaser Trailer Shows Michonne in Trouble with Walkers, Episodes Return Oct 13

During the 2013 Comic Con panel for AMC's "The Walking Dead," showrunner Scott Gimple said, "They might get a little comfortable, but then things might get a little dangerous." Now we have a new sneak peek clip from the upcoming season showing Michonne (Danai Gurira) running into some trouble with a couple of walkers. What does this quick look mean for the upcoming season? 

"The Walking Dead" returns to AMC on October 13, 2013.

Executive Producer David Alpert recently revealed plenty of information to AMC in a Q&A session, and here are some of the highlights:

"Q: If Season 3 was about the human threat, what would you say Season 4 will be about?

A: What we really have here in Season 4 is we dangle the carrot that civilization can be rebuilt...The notion that there's civilization and the notion that there's the possibility of there being laws and a sense of normalcy. I think we're going to see an evolution in the walkers - there's a whole bunch of new walkers - and we'll see an evolution of the threat of human-on-human. Dangling the possibility of civilization will make people much more desperate and willing to do things that would have previously been unthinkable.

Q: What's been the toughest character for you personally to lose from the show?

A: The great thing about this show is that literally every character is on the table... We have no one that is untouchable... One of the hardest things was killing Shane. In the comic, it happened much, much earlier, and Robert had said he wanted to give that character a little bit more space to breathe. So trying to figure out what was the right place to kill Shane was really difficult... In the screening room here in production, there's a wall that says 'Our Grateful Dead,' and it's got pictures of all the characters who've been killed off over the seasons. It's kind of insane: One, it's kind of touching, and, two, we've killed a lot of people on this show. [Laughs] It's hard to say which one was the toughest.

Q: Are you planning to add any characters to that wall in Season 4?

A: Oh, there's going to be a whole bunch of people added to the wall."