Well as of right now I know Mona and Toby,but I speculate that Jason maybe Lucas (but since the سیکنڈ to last episode with her blackmailing him my suspicion of him has gone down)..possibly Meredith she made me think she was innocent and that she was just as sad as Aria..she seemed to be good at "acting" like Mona and Toby were with Han and Spencer before they were caught and possibly Ali as well (but she has gone up and down with that idea a lot)
The Boss Of A-Team is Cortny (Alison's Sister) that we didn't know who's she!!? But the persons who work with A :: Paige and Toby and Mona and Maya.. Maybe spencer Iam not sure yet .!