I DNFed this book.

Regretfully, I could just not get into it. I didn't like or connect with Madeleine, I disliked Astraia (whom at least initially seemed like just a female clone of Sherlock), and I couldn't get into the story having disliked/not connected with the two main protagonists, so I quit trying to pick it back up.

It didn't seem like a bad story, mind, it seemed to have most things that make this type of tale interesting; I just couldn't find enough interest in the characters to keep up with the story.