The Walking Dead is back and we've got a brand new trailer for the series here. You'll be able to download Season 3 via iTunes.

In an uncertain world, Rick Grimes (Andrew Lincoln) and his band of survivors must not only fight the dead, but also face a whole new fear: the living. Based on the comic book series written by Robert Kirkman and published by Image Comics, The Walking Dead stars Lincoln, Sarah Wayne Callies, Laurie Holden, Steven Yeun, Norman Reedus, Chandler Riggs, Lauren Cohan, Scott Wilson, IronE Singleton, Melissa McBride, David Morrissey and Danai Gurira. The series is executive produced by Glen Mazzara, Kirkman, Gale Anne Hurd and David Alpert with Greg Nicotero as co-executive producer.