So, Jenna and the cop(I always forget his name) killed Ally... but who is A? Someone who was seeing the Dr.... And that lady is the second peron to mention the "pretty eyes" so whoever A is must have a unique color of eyes.... Maybe they wear contacts normally? And it can't be Ally because at the dance last season Mrs. Montgomery saw A and recognized them but she wasn't like "OMG! YOU'RE ALIVE ". Possibly Mona. A did attack them at Mona's b-day party and Mona would have plenty of reason to want to hurt them, with how they treated her when Ally was alive. Not sure how she would figure out all their secrets though. Unless Ally was like secret buddies with her or something. Doubting it's Wren or Mike.... Maybe Mona, I don't think there was any connection between her and Ally though. And why would she give up that info about the paper she wrote being copied?
The next season should start around winter time. Probably in 3-5 months.... too long, if you ask me Hope A pins Jenna to the wall