Tess Gerritsen the New York Times bestselling author of the Rizzoli amp Isles series now gives us a gripping stand-alone thriller In a shadowy antiques shop in Rome Julia Ansdell happens upon a curious piece of musicmdashthe Incendio waltzmdashand is immediately entranced by its unusual composition The mournful minor key and complex feverish arpeggios appear to dance with a strange life of their own Back in Boston when Julia plays the notes for the first time the music has a terrifying and unexplainable effect on her young daughter who seems violently transformed Determined to track down the music scorersquos origins Julia travels to Venicemdashand uncovers a dark secret that not only dates back to the Second World War but also directly involves a dangerously powerful family who will stop at nothing to keep Julia from bringing the truth to light.