Gr 9 Up—Emma Carstairs and Julian Blackthorn have grown up together, struggling with the deaths of their respective parents and the responsibilities of caring for Julian's younger siblings after the Dark War. Five years after they convince the Clave to allow Emma to stay with the Blackthorns in Los Angeles, Emma and Julian realize that they are drawn to each other in a way prohibited by the rules of their parabatai bond. Julian's older brother Mark returns, conditionally, from the Wild Hunt to help the duo investigate recent murders that Emma believes may be connected to those of her parents. The Clave insists that her parents' deaths were related to the war, so true to Shadowhunter form, the teens take matters into their own hands, enlisting the help of the warlock Malcolm Fade and their tutor, Diana Wrayburn, as they pursue a dangerous truth that will unlock secrets of betrayal, obsession, and revenge. Complications abound, with multiple cliff-hangers that hint at the hard-hitting drama to come as the series continues. Clare delivers spectacular Shadowhunter fare with her trademark street tough yet emotionally fragile adolescent characters taking on adult roles and includes plenty of violent action and passionate romance to satisfy fans of "The Infernal Devices" and "The Mortal Instruments" series, who will be thrilled to see some of their favorite characters from the previous books make appearances. VERDICT A must-have for libraries with devoted Shadowhunter fans, who will undoubtedly be waiting for this emotionally intense beginning to her new series.—Kerry Sutherland, Akron-Summit County Public Library, OH