The newly released promo photos for the Pretty Little Liars Season 3 Halloween episode (Season 3, Episode 13: “This Is a Dark Ride”) are all great, but this one stuck out to us as particularly intriguing.

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In it, Spencer (Troian Bellisario) (looking particularly lovely in her elegant costume) is being grabbed from behind from a tall figure in one of the creepy doll-masks (and the burlap sack costume that goes with it) from last year's Halloween episode. Oh no!

Our question is: Who's in the costume? In Season 2, Episode 13: ”The First Secret” it was implied that the doll-mask wearers were potentially linked to the "A" team, so our first thought is Toby (Keegan Allen). But would he really attack Spencer? Even though he's on the "A" team, we're not convinced he would physically hurt Spence (but maybe we're just overly optimistic).

If it's not Toby, who else could it be? The figure appears to be notably taller than Spencer, which seems to rule out Mona (Janel Parrish). In The First Secret we saw that Lucas (Brendan Robinson) was wearing one of those masks, but we're pretty sure the figure in this photo is too tall to be him, too.

We know Garrett (Yani Gellman) is supposed to play an "important role" in the Halloween episode, and after Season 3, Episode 12: “The Lady Killer” we trust him less than ever, so we're highly suspicious of him, as well.

Who do you think is behind the mask?

Find more Pretty Little Liars spoilers here.

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.

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

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