Pretty Little Liars #12: Burned: Aria, Emily, Hanna, and Spencer flee to a Caribbean cruise, but their stalker A is already onboard, plotting revenge

Burned, the twelfth installment in Sara Shepard's YA Pretty Little Liars series, is packed with thrilling secrets and spicy scandals. This #1 New York Times bestselling series is also a hit ABC Family original TV show.

High school seniors Aria, Emily, Hanna, and Spencer have made some terrible mistakes, but nothing compares to what they did last spring break.

Now the girls are packing their bags for a Caribbean cruise, hoping the trip will be a much-needed vacation from their stalker, A. But they should know by now that A won't be left high and dry.

Sure enough, A shows up on deck, ready to send these pretty little liars to a watery grave. . . . .