"Six months after the end of Wintersong, Liesl is working toward furthering both her brotheŕs and her own musical careers. Although she is determined to look forward and not behind, life in the world above is not as easy as Liesl had hoped. Her younger brother Josef is cold, distant, and withdrawn, while Liesl cańt forget the austere young man she left beneath the earth, and the music he inspired in her. When troubling signs arise that the barrier between worlds is crumbling, Liesl must return to the Underground to unravel the mystery of life, death, and the Goblin Kinǵwho he was, who he is, and who he will be. What will it take to break the old laws once and for all? What is the true meaning of sacrifice when the fate of the worĺdor the ones Liesl loveśis in her hands?" --Provided by publisher.