Noemi, a socialite in Mexico City, is sent by her wealthy father to check on her cousin Catalina, who is living in a remote estate with her new husband, Virgil. Catalina is writing strange letters about people living in the walls and accusing Virgil of poisoning her.

I found that the book took way too long to get going. The first part felt slow and stretched out, and when the action finally picked up, it was all crammed into the last 50 pages. It was bizarre and left me feeling a bit overwhelmed rather than scared.

I also didn’t think the romance added much to the story. The chemistry between the characters felt forced, and their relationship seemed unrealistic, especially given the dire situation they were in. I just didn’t find it engaging or believable.