At nightfall, windows are shuttered and children are locked away, but nothing can keep the music from entering. Two years ago, when the music began, sixteen-year-old Ekaterina Ivanov lost her only family. But when Ekaterina vowed to hunt down whoever was behind the disappearances, she never expected to be pulled deep into a world she never knew existed, or that she'd have even more to lose. Especially when Luca, a strange boy with lion's eyes and a note from her brother appears...with a connection to the music.