A thriller that doesn't resemble anything you've read so far.

The Spanish best-selling author introduces us to an exciting atmospheric thriller.

Antonia Scott is special.

Very special. She is not a police officer or a criminologist. She has never held a gun or worn a badge, but due to her unique intelligence, she has investigated dozens of crimes. For the past three years, she has been living secluded in her attic in Lavapies. What she has lost is much more important than what awaits her out there. Antonia Scott does not accept visitors. That's why she doesn't like it at all when she hears unknown footsteps climbing the stairs to the top floor. Whoever it is, Antonia is sure they are coming for her.