It's only a short matter of time before things come crashing down in the Alexandria Safe-Zone. The group hasn't felt comfortable in the Virginia development since they were asked to hand in their weapons upon entering, and two episodes later, they are no closer to calling it home.
Two weeks ago "Remember" ended with potential foreshadowing as Rick explained that if worst comes to worst, his group can simply take over the Safe-Zone and make it theirs. On Sunday's episode, titled "Forget," it seems that the group, barring maybe Daryl, oddly enough, is set to give up on their new friends.
Sasha could not handle being trapped inside the walls of the Safe Zone or the normality of going to a social event. Rick and Michonne are skeptical of their new jobs. All the while, Deanna, the leader of the Safe-Zone community, is still trying to integrate Rick and company into the "family."
The more Deanna is on screen, the less we know about her. This is the biggest red flag regarding the Safe-Zone. She told Rick she contemplated being a poker player before the apocalypse and we know she had a career in politics, but outside of that there are a scary number of unknown details about her. Her decision to not talk about the history of the community to the new members and lack of concern for security add to the mystery of the place.
Deanna's ability to read people looms large though. Nobody in Alexandria knows who the real Carol is besides Jessie's son and, after the speech he received, he'll probably keep his mouth shut. If someone will expose Carol for who she really is, it will be Deanna.
Perhaps the most telling moment from "Forget" was when, before catching Carol sneaking in the gun room, Jessie's son stamped Rick's hand at the dinner party. The boy noted to his mom that Rick's hand wasn't marked yet, so she allowed him to stamp it with the letter "A." In the beginning of the episode, Rick is outside the walls and kills a walker. Upon further inspection of the dead body, he notices that it has a "W" engraved on its forehead.
That is not the first instance of the group stumbling upon zombies with markings-- earlier in the season (episode nine, "What Happened and What's Going On") they open a truck and a pile of marked up zombie torsos fall out. There is significance there, and Rick knows it based on the closing scene of this past episode when the camera highlights the letter on his hand as he puts it on the fence.
There are only three episodes left this season, so some of these big questions will be answered soon enough.