Episode 6 of “The Walking Dead” was relatively calm compared to the first few weeks of Season 6, but don’t expect things to remain quiet on the AMC series. The drama will pick up once again in episode 7, “Heads Up.”

This past week caught fans up with Daryl (Norman Reedus), Sasha (Sonequa Martin-Green) and Abraham (Michale Cudlitz) on the road, but episode 7 will bring viewers back Alexandria. However, the safe-haven isn’t exactly safe. The synopsis teases that “things in Alexandria are quiet – briefly.”

A sneak peek video of “Heads Up” appears to show the calm before the storm. In the clip, Rick (Andrew Lincoln) is doing a perimeter check around the wall while Morgan practices Aikido.

“We haven’t talked,” Rick says when he walks past Morgan. “We should, a little later.”

Morgan smiles and says sure, but he looks nervous. However, the look on his face is nothing compared to Rick’s. The survivor finds the blood running down the inside of the wall, hinting that the security feature appears to be starting to crack.

Things get intense in the promo video for episode 7. The trailer starts with Rick lecturing someone about “making it now.”

“Do you really think you could do that without getting blood on your hands?” Rick asks an unknown Alexandria resident. Although viewers can’t see who Rick is talking to, one could assume that it’s Morgan. It’s been a couple of weeks, but fans will remember that Morgan locked up one of the Wolves in Alexandria. We know now that Morgan has his reasons for not killing and giving others second chances, however, it doesn’t sound like Rick will agree with his thinking.

The bigger issue is that someone in Alexandria is walking the street with a concealed weapon – and it doesn’t look like the person has it for protection. Could someone within Alexandria be trying to kill another survivor? We’re still suspicious of Ron (Austin Abrams) after he asked Rick to teach him how to shoot in episode 5.

It’s all out chaos in the last few moments of the trailer with Carol (Melissa McBride) looking frightened while she holds baby Judith. Meanwhile, Maggie (Lauren Cohan) can be seen running as Rick yells, encouraging everyone to “hurry” and “keep moving.”

“The Walking Dead” Season 6, episode 7 will air on AMC on Sunday, Nov. 22 at 9 p.m. EST. What do you think will happen in “Heads Up”? Tweet your thoughts to @AmandaTVScoop.