Teaser! 'The Walking Dead' Season 2

Calling all zombie diehards! Check out this first look at the upcoming Season 2 of "The Walking Dead," premiering on AMC in October.

The show centers on a group of people, led by Sheriff Rick Grimes (Andrew Lincoln), which has survived after the world was overrun by the flesh-eating walking dead.

You can also watch the trailer for Season 4 of "Breaking Bad," which premiered Sunday.