A new killer is on the loose: a criminal inspired by Lincoln Rhyme's original nemesis, the Bone Collector. The killer's methods are terrifying. He stalks the basements and underground passageways of New York City. He tattoos his victims' flesh with cryptic messages, using a tattoo gun loaded with poison, resulting in an agonizing, painful death. When a connection is made to the Bone Collector--the serial killer who terrorized New York more than a decade ago--Lincoln Rhyme and Amelia Sachs are immediately dranw into the case.