Within a masterful standalone thriller by NY Times bestselling writer of the Rizzoli & Isles series, Tess Gerritsen, a mom is haunted by an extremely old piece of music she discovers inside a strange antique shop in Rome.

The very first time violinist Julia Ansdell picked up the Incendio Waltz in a darkened antique shop in Rome, she knew it was a strikingly unusual composition. The minimal key and complicated feverish arpeggios possess a life of their very own. However when she plays the piece, Julia blacks out and awakens to find her small little girl implicated in works of surprising violence. When she travels to Venice to get the previous owner of the music, she uncovers a heart-stoppingly dark secret that not only dates back towards the horrors of the Holocaust, but also directly involves a dangerously powerful family who stop at nothing at all to maintain Julia from bringing the reality to light.