Detective Everett Larkin of New York City's Cold Case Squad has been on medical leave since catching the serial killer responsible for what the media has dubbed the "Death Mask Murders." But Larkin hasn't forgotten that another memento-another death-is waiting to be found. Summer brings the grisly discovery of human remains in the subway system, but the clues point to one of Larkin's already-open cases, so he resumes active duty. And when...