Graceling is an amazing novel. It's 99 cents. It's clearly priced to introduce you to a new author, but it's an introduction I'm very grateful for. If you like fantasy kingdoms, where good an evil are championed by heroes with powers that defy explanation, you'll love this book. This is a young adult book and I'd recommend it to my older grandkids.
Katsa is a Graceling. Her special power, or grace, is fighting and killing. Katsa's grace first appeared when she was a young girl and killed an older cousin who made her feel threatened. Her uncle, the king of Middluns, has honed her to be his enforcer ever since. She's the greatest fighter in the Seven Kingdoms. But Katsa also heads the Council, a group dedicated to providing justice for the people of the Seven Kingdoms. Katsa's mission to rescue the kidnapped father of the Lienid king turns into a much bigger challenge than expected. One that could decide the future of the whole Seven Kingdoms. This is one of the best books I've read in a long time. Very highly recommended.