After it was revealed in the penultimate episode of the first half of the "The Walking Dead" season 6 that Glenn (Steven Yeun) did the impossible when he survived the vicious attack of the walkers , more unexpected and heartbreaking scenes are coming in the midseason finale of the post-apocalyptic zombie thriller.

In the previous episode, hordes of walkers managed to take down a portion of the supposedly secure Alexandria wall. This could lead to the disruption of the safe haven of Rick Grimes (Andrew Lincoln) and his group as well as long-time residents of Alexandria, and the possible infiltration of the dangerous walkers in the gated community.

Based on the synopsis for the midseason finale episode titled "Start to Finish," things are not looking good for the people inside Alexandria.

The official synopsis reads: "After a few moments of peace, trouble finds its way to Alexandria again with a threat that may be too big to defeat."

This episode could feature several deaths of some of the most prominent characters of the series. The Hollywood Reporter listed down several characters who could probably meet their end when the walkers infiltrate the once-peaceful neighborhood.

According to the prediction, the characters who will meet their doom in the upcoming episode inclue Alexandria leader Deanna (Tovah Feldshuh), Rick's love interest Jessie (Alexandra Breckenridge,) former military sergeant Abraham (Michael Cudlitz,) Father Gabriel (Seth Gilliam), as well as Rick's longtime friend Morgan (Lennie James).

But based on the number of walkers heading toward to city, one or more names mentioned in the spoiler could definitely end up dead.

Meanwhile, a sneak peek at the upcoming season shows Glen and his wife Maggie (Lauren Cohan). The two are seen arguing over their plans to avoid the attacks of the undead. Could they make a comprise before the end of the episode?

"The Walking Dead" season 6 midseason finale airs on Nov. 29 on AMC.