ok so here it goes. this was my theory from the week after the last episode aired. being a crazy PLL fan, which constantly ends on a cliffhanger, i have become this person who rewatches final episodes over and over looking for clues. literally i have watched the final scene from the finale about 50 times. and in slow motion just to see if there were any clues on then ground in front of the victim. sad to say i couldn't find any except the obvious one which is 'it was filmed from the victims point of view'. now with that being said think back to this episode how they constantly showed a scene over and over, which was the inside of the van. where Glenn, Rosita, Daryl and Michonne were being held captive. I believe they showed this scene 4 times. this scene was shot through the persons point of view. each time the scene was played it changed a bit so you could see it was filmed from inside the van AND each time you were able to see this "person" was sitting towards the back of the van. when they open the doors to pull them out you clearly see Daryl first. THIS IS WHY I BELIEVE IT WILL NOT BE DARYL WHO GETS KILLED. this is also why I believe it will be glenn or rosita for the fact that they were furthest back in the van. to conclude I feel that they filmed this was on purpose as a clue to us. I could be wrong. I could be crazy. but this is why i believe Daryl is safe and Glenn is not.