A meticulous MO for victims linked apparently only by plastic surgeon Kelly Nieman, a suspected serial killer herself, who gave the unwitting women identities fitting an archetype, arouses the confirmed feeling that serial killer 3XK is back. Castle is brought back as a police consultant for this case, being the absolute expert on the fiend. While he and the team work through their charades and legal defenses, one of their own is targeted.
—KGF Vissers