The Graceling Realms - Bitterblue and Fire
Author Kristing Cashore made quite a splash in the YA Fantasy genre with Graceling. It's a good book but so standard for the genre that its mostly forgettable except for the world defining gracelings, people blessed with an extraordinary ability with the physical mark that their eyes are two different colors. It can be virtually anything but the most feared are those with mental gifts which brings us to the worst of those, King Leck, who used his Grace to brainwash and control an entire country. His assassination in the book Graceling leaves his daughter Bitterblue as queen of a people who have no idea how much of their past is real and have to live with the horrible things they did under his control. As Bitterblue delves deeper into the secrets of the past she discovers her father was worse than she ever imagined and quite literally a Monster from beyond what they thought was an impassable barrier. The companion novel Fire takes place on the other side of the barrier in a strange land with Monsters instead of Graces with their own story of Leck that will bring the two lands together.