I wonder who killed annie also. Just like you all mentioned, it could be either the mom, the mom's husband, the bathroom lady, the gay guy, maprang or even boy. i would think that it's the mom's husband because if not, why would annie show her face when he's trying to rape maprang. also the gay guy looks suspicious when everyone gather to see annie on top of the car and the camera was on him for a while. Then it could be the bathroom lady because she have that hateful or something face, she probably don't want anyone to mess her bathroom, see the way she have it all clean and would wipe away the water on the counter even with annie and rita. seems like she's trying to wipe their handprint or something. then with boy and maprang, they seem to be keeping something inside. Also on the teasers, annie shows up to maprang and she was scare. any of these people can kill annie which i think they're trying to make us viewer guess with all these possibilities.
For sure though i know it would never be rome. i think he loves her too much to kill her. I just don't think rome kills her but i would suspect boy until they reveal who kill annie. i just love rita and her wig, she looks good in them except that i can't wait until she change her hair. I like that rome and rita always have something to talk about whenever they meet. i like to watch their scenes more than other. I wonder why annie keeps showing up to rita and her brother. maybe she wants to tell them? anyways, can't wait until friday, saturday and sunday for this to air.