I honestly have mixed feelings about this book. The world created, with the creatures and the way their society was set up, was really interesting and really detailed, actually. Burton did a good job setting that up and showing what was at stake from the beginning. 

However, I think this could have been a standalone book, rather than make it into a series. For me, I felt like the story could have been wrapped up at the end of this book. There's a cliffhanger, sort of, at the end of this one that didn't quite feel like it was necessary. 

I've read other books with Sirens before, and I also wasn't a huge fan of how they were portrayed in this book. It was like Saoirse was being made to be an anti-hero, but there wasn't enough balance there. There was just something off about it for me.

Overall, there was a lot of potential here, but the story just fell flat for me.