On Pretty Little Liars Season 4, Episode 21 (“She’s Come Undone") Paige McCullers slipped the cops a note letting them know Ali is alive. The justified action of a worried girlfriend? A spiteful move prompted by jealousy? Or could this surprising betrayal actually be a sign that Paige has an agenda that goes well beyond Emily?  

Every week, we like to explore the world of fan theories that are so crazy they might just be right (in fact, some of them have been in the past!), and this week we want to talk about the theory that Paige is, in fact, the person after Alison.

While we suspect that Paige was just acting to try to help Emily, it's possible Paige actually had a totally different reason for ratting out Ali: she wants to force her into the light, because she's the one who's been trying to find an hurt her this whole time.

Why might that be? Here are some of the reasons this theory seems at least possible:

She has motive. The show has established that Paige and Ali had an intense and painful history. Ali hurt Paige, a lot. At the same time, Paige was one of the few people that Ali was afraid of. Maybe there was a good reason for that, and maybe Paige is seeking the ultimate revenge.

It would explain her dropping the note off. Isn't Paige smart enough to know the cops are incompetent? But if her main goal is just to scare Ali into slipping up, that wouldn't really matter...

What do you think of this theory — is it possible, or totally crazy? Sound off in the comments below.

Catch the next episode of Pretty Little Liars Season 4 on Tuesday,March 4, 2014 at 8 p.m. ET on ABC Family.