August 01, 2013 1:39pm PT by Lesley Goldberg
'Walking Dead' Cast Tease New Threat in Season 4 (Video)
When AMC's The Walking Dead returns in October for its fourth season, Rick's beleaguered group will be facing a new threat beyond walkers and rival camps.
In a new video featuring the cast and creators from the Atlanta set, co-star Steven Yeun teases that the writers are "one-upping" the story from last year, which ended with a brutal confrontation between Rick (Andrew Lincoln) and the Governor (David Morrissey).
This year, says the cast, will feature a "deeper," "darker" and "bigger story" featuring shocking new elements -- including a prison that has been upgraded to feature a farm as the growing group filled with former Woodbury residents looks to find a place to live that doesn't feel like a cell block.
Check out the clip below for how Maggie (Lauren Cohan) plans to live life to the fullest and how Rick's mindset has changed. (And watch the entire Walking Dead Comic-Con panel, also below.) The Walking Dead returns Oct. 13 at 9 p.m. on AMC.