A body appears on the Island of the Dolls. This crime increases the relevance of the ritual killer case. Mejía and Mondragón realize that Casasola always supported the ritual killer theory, and led and distracted them with his speculations.

Captain Peña asks Mondragón to solve the case of the ritual killer within 24 hours or he will remove her from the case. Casasola discovers a grotto, where he finds a lair with the five missing heads of the ritual killer's decapitated victims.