AceShowbiz -

AMC unleashed a new trailer and announced a premiere date for the second season of "The Walking Dead" at its Comic Con panel on Friday, July 22. The intense trailer mixes footage from season one and new scenes from season 2, which mostly follow the survivors being stranded on a highway with a group of zombies approaching.

The new season will premiere Sunday, October 16 at 9 P.M., an hour earlier than its previous time slot. It will additionally consist of 13 episodes, twice more than what AMC ordered last season.

Speaking about another change in the upcoming season, creator Robert Kirkman said, "The first season was all about being in the city, and dealing with zombies in the streets. The second season is about zombies in the woods and what's behind that next tree. It's a much more rural setting."

Laurie Holden, who joined the panel along with co-stars Sarah Wayne Callies and Jeffrey DeMunn, revealed that her character Andrea will be pushed further after the loss of her sister Amy. "Amy was the love of my life and there was no cleansing," she shared. "Every character is pushed to the max [in season 2] ... if you are a fan of the graphic novel, I think you're really going to love this season."