I don't think it will be Maggie as he can then "help" her get to the doctor, in a "I will punish but also will "look" after those who obey" kind of way.... Plus the impact of killing someone who looks so close to death wouldn't have such an impact.
Won't be Rick, because it's Rick - but was in two minds, would he beat him almost to death so you "break him" or leave him unharmed to cause resentment with the troops
Oh I really don't know it's been bugging me ever since....
I just hope it's not daryl, don't care really too much about the others.
But they do this cliff hanger OMG stuff every season, every season I promise myself I will start watching after the next one starts so I don't spend six months thinking about it only to be bored for the first four scene setting episodes of the next (although the start of this one was epic!)