Katy Green is a working musician in the years before World War II. It's 1939, and Katy tries to help a friend out of a jam at a classical music conservatory that ought to be a quiet oasis in Hell's Kitchen, New York's roughest neighborhood. But when Katy searches for the stolen manuscript of a string quartet by Paganini, what she finds is madness, mayhem, unexplained sudden deaths, and a fight for her very life.