The Walking Dead Season 3 Trailer

The Walking Dead season three trailer, released, of course, for Comic-Con .

“Every year we try to refine and determine what we love about certain walkers,” the series’ special effects supervisor Greg Nicotero revealed at Comic-Con. “We really want to sell that they are decomposing and emaciated. And there are a lot of them.”

The Walking Dead will air in the UK on FX .