Talk:A is for Answers/@comment-84.123.160.139-20140319023748

What if Courtney DiLaurentis is in fact Jason's twin and Ali's older sister?

Is obvious that there are at least 2 persons involved in what have happened in this episode because one of them was in NYC with the girls and the other one in Rosewood killing and burying Jessica. They've could be the DiLaurentis twins.