The Pretty Little Liars cast and crew sometimes tweet pics from set, and it's always fun to see what's going on behind the scenes. But rarely are the photos as intriguing as this pic from the set of Season 3, Episode 18.

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PLL writer Lijah Barasz tweeted this photo, saying "Shay and Drew on the set of #PLL Ep. 318." And we must say, we have a lot of questions.

For instance, where are they? Based on the wall behind them, which lists various names and dates, it looks to us like they are at a memorial or cemetery of some sort. However, while Drew Van Acker (Jason DiLaurentis) is wearing a suit, Shay Mitchell (Emily) is in an adorable sundress and jean jacket — not exactly the normal attire for a funeral or other sort of memorial. (Of course, it's possible Shay isn't in costume yet.)

It's pretty rare for Jason and Emily to be in the same scene, too — though just because they're on set together doesn't necessarily mean they're filming together. Maybe Drew is filming some sort of memorial scene, and Shay is working on something else?

Yesterday (September 13), Lijah tweeted that her "favorite scene of the episode" involved Shay giving her "chills." We're not sure if that's related to this photo (which she didn't tweet until today), though.

Here's another theory: Maybe Alison's (Sasha Pieterse) body finally turns up (as producer Oliver Goldstick says it will), and this is a second memorial. Maybe they're even having the body cremated. That would explain why Shay/Emily and Drew/Jason are both at a funeral home (or something like it) together — though it still doesn't really explain Shay's dress.

What do you make of all this info?

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Don’t miss the next new episode of PLL, the Halloween special, on Tuesday, October 23 at 8 p.m. ET/PT on ABC Family.

Source: @PLLijah, @PLLijah

Rebecca Martin is an editor at Wetpaint Entertainment. Follow her on Twitter @BeccaMartin47.

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