3.5/5 stars. Thank you to NetGalley for the arc! This book is pretty character driven, so if you're expecting a lot of action, maybe go elsewhere. The main thing that kept me from rating this book 4 stars are the plot holes and unanswered questions. I love ambiguous endings and questions in some books, but not when it's the important plot points that are not being addressed or explained. Rather than being left open to interpretation or things that can't be explained, these just felt like abandoned plot lines. The concept itself was pretty interesting though, and it kept my interest for the most part.