It’s not just the Aldayas’ and Jausàs’ similarities in character or socioeconomic circumstances that led them to inhabit the same house or make the same mistakes. Rather, the house itself seems to interact with the families and influence their fate. By making the house an agent in the story, Zafón suggests that some supernatural element is at play in the families’ lives, and that their destinies are determined by something greater than coincidence or worldly events.