AMC revealed the first trailer for the upcoming season of their hit zombie series, The Walking Dead. The trailer was unveiled today during The Walking Dead panel at the San Diego Comic-Con. The new season will feature new cast members including Danai Gurira as Michonne and David Morrissey as The Governor–two fan favorites from the comic book series that inspired the show. Check out the season three sneak peek below. The Walking Dead‘s third season will debut Sunday, October 14 at 9 pM / 8C on AMC.