Ignorance is bliss. Revenge is better. It's been one year since the Lullaby Killer was punished for his crimes, and Mason Black's life has already improved. His PI business is thriving, his family life is stronger than ever, and after years of misery he's finally happy. It's a shame it has to end. Three bodies have been discovered with accusing messages carved into the skin. Hiding below the police radar, Mason flees across San Francisco in search for answers, desperate to find his tormentor before the SFPD arrest him. His only clue? Somebody wants revenge, and they'll stop at nothing to take it.