Credit: Troian Bellisario Instagram

We just know there is more to Mrs. DiLaurentis’ story, and hopefully we’ll get to hear it in an upcoming episode of Pretty Little Liars. Andrea Parker is back on set as Mrs. D. and who she’s hanging with might surprise you.

“I just love it when Mrs. D. comes a-knockin'. Don't you agree?” PLL writer Bryan Holdman tweeted yesterday, blipping our DiLaurentis family radar. But it was really the photo Troian Bellisario (Spencer) shared from the set of Season 4, Episode 21 that caught our attention.

“Rosewood has the hottest moms. But what are these two doing together... WITH ME!” Troian tweeted, along with a snapshot of Lesley Fera (Veronica Hastings) and Andrea looking lovely. Troian poses an excellent question. Just to recap, these two women have a pretty rough history. Mrs. DiLaurentis had an affair with Peter Hastings, aka Veronica’s husband that resulted in Jason DiLaurentis. For these two to be together, something big must be going down.

Does Mrs. D. need legal advice from Veronica? Or might Spencer be in some serious trouble perhaps concerning the pill-popping we know will be going down? This is also the episode with guest star Nathaniel Buzolic as Dean, someone in town to help Spencer regardless of whether she wants it. Could Dean somehow know Mrs. DiLaurentis? Did Ali have a history with abusing drugs? We wouldn’t put it past the girl.

Another possibility is that Jason is in danger. We won’t have seen him for almost an entire season at this point, and when people disappear for that long, bad things usually happen to them (amirite, Maya?). We doubt Veronica would be overly eager to join in the Help Jason Campaign, but given that her daughters are his half-sisters, maybe the woman is fighting past her feelings of betrayal to help Spencer out.

Why do you think Mrs. D., Veronica Hastings, and Spencer are hanging out? Share your theories in the comments below!

Catch the Pretty Little Liars Season 4 Halloween special on Tuesday, October 22, 2013 at 8 p.m. ET on ABC Family.