"The Book of Locked Doors" by Yoon Ha Lee is a beautiful story. Vayag has got a book. Her sister left it to her and it talks to her. It's full of the kind of skills she would need to fulfill her mission if she wanted to risk the lives of innocent bystanders, or disturb the spirits contained in the pages. This is a choice she has to make constantly as she moves through the city and begins to question her mission.
There is a political theme to this story, but I just love the idea of the book.
Check it out, text and audio at Beneath Ceaseless Skies.