No one wants to spend the night at their school talking about bullying, but when that school is Rosewood High, a lock in could turn deadly.

In this sneak peek of Pretty Little Liars Season 2, Episode 19: "The Naked Truth," it looks like the Liars will have to face all of their enemies when the school cracks down on bullying, from Jenna (Tammin Sursok) to Kate. Will "A" crash the school event, too? Knowing this show, probably.

Watch the suspenseful preview below.

Credit: YouTube Photo: Watch! Pretty Little Liars Season 2, Episode 19 Preview

Be sure to tune in for the episode on Monday, February 6 at 8 pm ET/PT on ABC Family.

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