Anna thought she found the perfect family. They thought they found the perfect victim.

Desperate to leave behind her dead-end life in Chicago, Anna Martinez accepts a job as an au pair in the Spanish countryside. The Castellanos family is everything she hoped for: wealthy, elegant, and unnervingly perfect. Their secluded estate is a dream. Their hospitality? Flawless.

But behind the locked doors, something is very wrong. Rules Anna can't break. Rooms she can't enter. Questions she shouldn't ask. And then there's Sofia - the last girl who stayed with the Castellanos. No one talks about her. Because she never left.

As the walls close in and the masks slip, Anna uncovers a truth more horrifying than she ever imagined. The family didn't choose her by chance. They've been waiting. And now... they're ready.

This gripping psychological thriller drags you into an unforgettable au pair experience. Read in one hour!