Credit: ABC Family

So, you’re still dying to know who is the Big “A” on Pretty Little Liars. Don’t worry — we’ve got our crack team of sleuths on the case, analyzing every clue for your mystery-solving pleasure.

Who is “A”? Here are some hints from Season 4, Episode 15: “Love ShAck, Baby!” that may help us solve this thing for good!

And don't forget to check out our 10 Burning Questions from the episode for even more hints and clues! 

3. Wren Kingston

Why he might be Big “A”:

Does Wren own that creepy cabin? After all, Ezra points out that his out-of-the-country “friend” owns it, and we know that Wren is in London with Melissa. So maybe Wren was the one who locked the girls in the cabin room this week? And there’s that apple on A’s desk at the end of the episode, which might be a nod to Dr. Wren, given the whole “apple a day” expression.

Why he might not be Big “A”:

Well, he’s definitely creepy, especially with his connection to Radley. But in the Season 4 summer finale, the Liars learned that “A” has been watching Wren, which would make it unlikely that he’s Big “A.” And what would he even have against Ali?

2. CeCe Drake

Why she might be Big “A”:

CeCe didn’t appear in the episode this week, but she made her presence known, as she was spotted at a train station in Maryland. So where is she headed? Actually, we wouldn’t be surprised if she’s the one who swiped Ali’s diary, not only to find Ali but also to protect any secrets that might be in there about CeCe.

Why she might not be Big “A”:

Given that she was discovered to be wearing the Red Coat in the Season 4 summer finale, having her be Big “A” might be a bit of a letdown. And would Big “A” really get spotted at a train station? We think Big “A” is a bit more stealthy than that.

1. Alison DiLaurentis

Why she might be Big “A”:

We got a slew of clues this week suggesting Alison has a twin, including the mention in Ali’s diary about someone wanting to be Ali, along with the recording of Ali saying she wants to stop being Ali. So we’re fairly confident Ali or her twin is Big “A.” Plus, Ali or her twin probably had something to do with Toby’s mom’s death, since there was a patient on the roof with her.

Why she might not be Big “A”:

Well, we really don’t know if Ali has a twin. So maybe Ezra is the one with the twin? Or maybe CeCe is the person who was becoming like Ali? Either way, it appears that we’ll be learning more about Ali’s crazy life next week. At least, we better.