Special Agent Elizabeth Hewitt returns, called upon to investigate a parallel series of bizarre slayings with a strange link—the haunting nocturnes of one of the world’s greatest composers. They seem to be stirring a madman with his own visions for beauty, for music, and for death. Victim by victim, note by note, Hewitt is stepping into the darkness to find him—and to experience first-hand the terrifying crescendo of a killer’s ultimate inspiration.