Take the Key and Lock Her Up (Embassy row 3) by Ally Carter

Blurb:

The princess is dead. Long live the princess.

Centuries ago, the royal family of Adria was killed…or so everyone thought.

Now Grace Blakely knows the truth: There was one survivor, and that survivor’s blood runs through her veins. This simple fact could cause a revolution—which is why some people will stop at nothing to keep it from coming to light.

There is only one way for Grace to save herself, save her family, and save the boy she loves. She must outmaneuver her foes, cut through the web of lies that has surrounded her for years, and go back to the source of all her troubles, despite the risk.

If she wins, she will inherit a throne.

And if she loses, she will inherit the fate of all the dead princesses who came before her. 

My Thoughts:

this book was a really good was to end the series. the way the last book ended had us wanting to kill the author because of the way the book ended.  we now know that she is the one true heir to the throne. a lot will happen in the pages of the book that you will not see coming. Grace's biggest problem is that she thinks she is alone but she really is not. i feel that every person has felt like this at least once in there life. the book ended the way that the first book started out. this was a great series and i feel that it ended beautifully. if you have not read this series yet i highly recommend it.