The residents of Rosewood are good at keeping secrets, but the Pretty Little Liars Powers That Be are even better. So really, it's no surprise that they're keeping most footage from the Season 4 finale (Season 4, Episode 24: "A Is for Answers") under wraps. That said, there is one sneak peek, and this short video does give us some clues about what to expect when Ali reveals all.

So, what can we learn from this sneak peek? We've broken it down.

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1. Yes, the Liars find Ali. Obviously this isn't really news, but it's very exciting to see all four Liars talking to their long lost bestie again.

2. Hanna spills the "Mrs. D is 'A'" theory. You know what else is exciting? To see the Liars actually communicating! This sneak peek opens with Hanna admitting to Ali that they think her mom is "A". Way to lay it all on the line, Han. Good job.

3. Watch the dynamic between Ali and Spencer. Perhaps the most interesting moment in this promo comes right after Hanna tells Ali about their suspicions about her mom. Ali gives Spencer a knowing look and doesn't respond until Em says, "You don't seem surprised." "It's complicated, Em," Ali replies, and Spencer looks to the floor.

4. So, why tell now? At :19, Ali gives an explanation (of sorts) as to why she's stayed so hush-hush about her secrets until now. "I've never figured out the right way to tell you what you need to know. I've never been able to say the words out loud." Hmm. Do we believe that's the real reason? We'll have to wait and see how Ali's confessional turns out before making a final call.

Does this sneak peek make you excited for the finale? Sound off in the comments below!

Catch the next episode of Pretty Little Liars on Tuesday, March 18, 2014 at 8 p.m. ET on ABC Family.

Rebecca Martin is an Associate Editor at Wetpaint Entertainment and our resident Game of Thrones, Breaking Bad, and genre TV expert. Follow her on Twitter and Google+!