The two Gracelings start out to the southern state of Monsea, where they investigate the King, Leck, his wife and their daughter, Po's cousin. As it turns out, Leck is also Graced, but he uses his in a despicable manner. I'm afraid I may have given too much away already, so I'll have to leave the summary at that.
The Graceling raises many relevant questions for young adults: What is your own special ability? How do you use it for personal gain and/or public service? What are your views of relationships, marriage and children? Do these views align with Katsa's?
I have heard there is a second book in the Graceling series. I'm excited to see what happens next, but I also have a full shelf of books to work on for now. Enjoy!