'Pretty Little Liars': 11 Clues

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Here's a special Halloween treat! Pretty Dirty Secrets, the smartly named web series attached to ABC Family's addictive teen mystery drama Pretty Little Liars, is loaded with special clues about the series. Before the last of eight webisodes premieres on Oct. 16, we scoured all under-the-radar hints about the series' upcoming Oct. 23 Halloween episode (guest-starring Adam Lambert), as well as its new season, which launches in January.

Without further ado, here are the 11 photo clues any good Pretty Little Liar should notice:

1. QUEEN OF HEARTS
Did you notice the creepy gal hanging out in the web series? We've seen the Queen of Hearts in the past with ''A'' culprit Mona. Just know this: She's important to what lies ahead.

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2. MASKED CLUE
In episode 6 of Pretty Dirty Secrets, we saw this mask-filled photo on the mysterious Halloween store clerk Shana's phone. (Pay close attention to her, too.) Look close at this photo — do you see a familiar face? Because, well, you should.

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3. SPOOKY TIMES
Did one (or more) of our Little Liars shop at the Halloween Spooktacular store? It certainly looks like it from this clue-filled photo.

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4. WHAT A DISGUISE
There are actually two clues hidden in this photo. The horn-rimmed glasses? The wig? The mirror? For a refresher, check out episode 7.

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5. BY THE NUMBERS
There sure are a lot of phone numbers in this picture, but a couple are especially interesting. Look close — two of the calls in particular provide clues to what this Shana character is up to.

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6. MR. POSTMAN
The clue laced into this photo is big — and likely concerns what's going to happen in Pretty Little Liars' come January. Think about what's being exchanged here...and why. What is Lucas up to?

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7. RED COAT
Did you notice this infamous (and spooky) red coat? And who the red-coated person is lurking behind? Lucas!

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8. ANOTHER COSTUME
Yep, another costume...but this one caught the eye of one of Rosewood's men. Who's your best bet?

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9. TEXTUAL CLUE
Another double clue! On a phone! What two things make sense together here, Liars?

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10. BLONDE BOMBSHELL
This clue is kind of a gimme — that's a Marilyn Monroe costume, which will become important. Not least of which because one of the Liars pulls off a pretty awesome version of the blonde bombshell in the Halloween ep.

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11. WHERE'S NOEL?
What do you see here? Here's a clue: Noel Kahn. Again: Noel Kahn. This clip may help you a little bit.

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'Pretty Little Liars': 11 Clues

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