"Once there were two sisters born with a bond so strong that it forged them together forever. Roa and Essie called it the hum. It was a magic they cherished-until the day a terrible accident took Essie's life and trapped her soul in this world. Dax-the heir to Firgaard's throne-was responsible for the accident. Roa swore to hate him forever. But eight years later he returned, begging for her help. He was determined to dethrone his cruel father, under...