Adrian Stone was a musical child prodigy, until he slaughtered both his parents at the age of sixteen. Nine years have passed since then. Now he's escaped from a high security psychiatric unit, to embark on a murder spree. Stone plans to kill everyone that's hurt him, including Dr Alice Quentin. She's the forensic psychologist tasked with tracking him down. But the only clues he leaves behind are the melodies composed at sites where each of his victims die.