I think I'm gonna have to watch the series over again once it ends..I can't remember who did what anymore. At the beginning of the season there are 2 theateners threatening the liars..one that wanted to know who killed Cece and the one that actually did kill Cece? Was Dunhill and Mary Drake threatening the liars cuz they were the ones that wanted to know who killed Cece? Or were they also working with AD? Also are we to assume AD was the one that killed Cece and Mrs. D? If Lucas is AD WHY would he kill Cece since it seemed like they were friends.. Might be silly questions but when they're are long breaks it's hard to remember everything that happened.