I think we can agree that when you're locked outside in the freezing cold not knowing what peril you'll face next, you may have the occasional mood swing. Or maybe they are just sick of Mona talking BS.
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Alison must have been cleared of Mona's death. We know she loves attention, but this might be a little bit too much, even for her. Will she start spilling some more secrets and make them public knowledge, or will she write a tell all?
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Looking at the ground, the liars contemplate how they got to this point in life. It sure looks like they could be debating how to start a fire to get warm before having to rely on some old-fashioned body heat.
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Aria pleas with someone to set them free. It's most likely Charles, but Emily seems to be staring in a completely different direction than the other liars. Could this be proof that there are two A's?
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Mona is deep in thought, but who could be on this liar's mind? She's probably thinking that she isn't as good as A as well as ways to ramp up her own form of deceit.
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Has Mona ever looked this good? Just kidding. Mona Vanderwaal looks like she hasn't taken a shower in quite some time. She looks like she has officially given up hope on escaping. We can't blame her. She's in the middle of nowhere.
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We know that Ezra and Caleb are still looking for the liars, but why are they looking less than impressed with what Alison is saying? Because she's probably lying again! Booyah.
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While Spencer is catching some sleep, Hanna is thinking about when, or if, she is getting her next meal. This would be the perfect time for some comfort eating.
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Pretty Little Liars Quotes

Lord help the mister who comes between me and my sister.

Cece

You think the truth is this big shiny disco ball of purity then go ahead and try it. See what it gets you. Telling the truth to the wrong person at the wrong time is how I ended up where I did. Take it from me you're always better off with a really good lie.

Alison