Talk:Who's In The Box?/@comment-14539762-20131103112314/@comment-24004040-20131103120009

I think it's a secret related to Spencer past, like it was said, that Ali found out and probably again blackmailed her with that, and of course now that she's alive it's getting her into trouble, because she probably still has trust issues concering Alison.

And in the night when they fought, Spencer and Ali met again and they probably talked about that secret, maybe something along the lines of Ali exposing it and than it follows the books, as Spencer pushing Alison, thinking that she killed her, when she in fact didn't.

That's my guess. (: