04-04-2016, 09:43 AM
I haven't watched it yet but I've been spoiling it this morning reading PTV (I read comic spoilers at wikia long ago). Anyways, someone isolated the voices in a short clip and you can pretty much tell who got it from that. If you're not into totally annoying and unnecessary cliffhangers, click show.
After listening to the audio and isolating the voices, I think it's Glenn:
Glenn: "Maggie!" (0:10 mark)