The Walking Dead cast and crew have promised an explosive second half to the sophomore season (returning next month), and now a light new spoiler may explain what it involves.

TV Guide has learned that Hershel’s attitude towards his guests will introduce a new threat:

NATALIE: The barn massacre will be the least of the survivors’ worries, especially since Hershel will be even more adamant about them leaving his farm. “While Hershel’s suffering this loss of hope and trying to deal with these problems, it actually leads us into a new threat and causes the group to encounter something very dangerous that will be an exciting element in the new half of the season,” executive producer Robert Kirkman teases.

Does it likely involve these two new characters who Rick and Hershel see enter the room while they’re talking?