‘The Walking Dead’ Midseason Finale: 5 Things to Know Before Watching
Merle is back and he's kidnapped Glenn and Maggie
Merle, minus one hand (but with an awesome homemade hook) is now living in Woodbury and acting as head goon or whatever for The Governor. He was still hoping to find his baby brother someday and when Andrea finds her way to town, Merle thinks he's found his chance. When Merle comes across Glenn and Maggie out looking for food and supplies for the new baby, the Governor is all for "questioning" them for more info on where their group is. This form of questioning involved beating Glenn nearly to death and setting a zombie on him, plus humiliating Maggie.
Don't worry though, Rick is on his way with a rescue team (including Daryl, which will make things interesting when they all meet up).