Vampire Academy. The Last Sacrifice. Book 6

The ruler of the Moroi, Queen Tatiana, is dead! And all the evidence points to the fact that the criminal is Rose Hathaway. The sentence is severe - Rose must be executed.
Now the girl has only two weeks to gather proof of her innocence and present it to the royal court. Besides worrying about saving her own life, Rose must help her friend, Princess Lissa, claim the vacant throne that rightfully belongs to her...

The sixth and final book of the cult series by Richelle Mead in a convenient classic pocket format.