A traveling businessman is snatched off of an Upper East Side street in broad daylight, or so it appears to the eight-year-old girl who is the crime's only witness. The perp leaves a token at the site of the kidnapping, a miniature noose. A crime scene this puzzling demands forensic expertise of the highest order. Lincoln Rhyme and Amelia Sachs are called in to investigate. Their investigation takes an unexpected turn when a similar kidnapping occurs across the Atlantic in a small town outside of Naples, Italy. The killer's M.O. is bizarre and frightening. Obsessed with music, the man records the final breaths of his victims, then uses a keyboard sampler to compose an otherworldly tune that is then posted online. The search for the killer will become a complex case of international cooperation.