So... that happened on The Walking Dead Season 4 Episode 14.

In what has to be considered the most shocking development this year on the AMC smash, Carol killed Lizzie because the little girl had lost her mind and was considered a danger to the other survivors.

She brought Lizzie out in the woods and shot her in the head. Simple as that.

While viewers grapple with this development and wonder where the show could go from here, AMC has released an official promo and a special sneak peek at The Walking Dead Season 4 Episode 15.

Check them out now:

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.