This is it, guys. The Pretty Little Liars Season 4 finale (Season 4, Episode 24, "A Is for Answers") is almost here, and with it comes answers. Big time. It's right there in the title!

We know Alison DiLaurentis (Sasha Pieterse) will be spilling some serious truths about the night she disappeared, and we're counting down the hours until we finally get her account of what went down. After four seasons of questions, you'd think a few more days wouldn't bother us, but, honestly, we're not really sure how we're supposed to through this weekend.

To help make the wait a little less painful, we've gathered all of the biggest spoilers about the episode right here. Have fun pouring over these and trying to figure out what it all means!

Read spoilers at your own risk! For more on Wetpaint Entertainment's philosophy on spoilers, click here.

No, really, we get answers! In this sneak peek we see Ali say she's ready to tell the Liars what they need to know, which matches with the official synopsis of the episode, which promises, "After years of questions and mystery surrounding the night Alison DiLaurentis disappeared, her four best friends come face to face with Ali and finally earn what really happened to her that September night."

It's a game changer. According to Ian Harding, "lives may or may not be destroyed" in this episode, and he says things can never be the same again after what happens.

Lots of characters are back. We're going to see a lot of familiar faces, in both the past and present. As we can see in the promos Melissa is definitely in this episode, though we don't know if that's just in flashbacks, or if she also shows up in the present. These promo photos show that the flashbacks will also involve Ian (duh, they would have to), and we catch a glimpse of Jenna, probably in a flashback, in the American promo. And Noel is back! Based on these pics, we're pretty sure he's involved in the present. (Is he the person the Liars were shocked to see at the end of Season 4, Episode 23? Could he be helping Ali?)

An epic nerdy Mona flashback. Another returning character? Nerdy Mona! There will be an epic scene between her and Ali, which will hopefully help explain exactly what their connection is.

And Ali met with Ezra! Another exciting flashback scene that we get a taste of in the sneak peek pics is a meeting between Ali and Ezra. Yes. All the yes. We can't wait to see what this is about.

Who ends up in serious danger? We know the Season 5 premiere features "a beloved character" in "serious danger" — the kind of danger that requires a surgeon. We don't know for sure, but we think it's pretty safe to bet that whichever character this is, he or she gets hurt in the finale. Our guess is it has something to do with the rooftop confrontation we see teased in the promos.

Catch this 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+!