Patrick Kenzie and Angela Gennaro's client is a prominent Boston psychiatrist, running scared from the vengeance of the Irish mob. But something even more frightening is lurking in the shadows. Death himself bears down on them now - reaching out with cold, bloodstained fingers from twenty years in the past to shake their world with a spree of violent, horrific murders that bear an unmistakable signature: that of a long-imprisoned psychopath...