I wish I could give this book a 4.25. It was actually really good. the story was simple but exciting and it was easy to become invested in the main character and her quest. 
 Echo is a sassy little badass and I love her. 
 Now, of course there were some faults... The romance aspect felt forced and didn't draw me into it, and the other important characters didn't feel as real as Echo. The last quarter or third of the book felt insanely rushed and not in-depth enough to fit with the quality of the rest of the book. Things sort of fell apart at some point and I was really confused as to why the writing ended up so inconsistent like that. the first half was amazing and then the second was just average and felt unfinished and unpolished. 
 That said, the story and Echo herself, were strong enough for the most part to warrant my high rating, for me anyway. 
 I highly recommend this for fans of Cassandra Clare's Mortal Instruments series, as well as fans of Laini Taylor's Daughter of Smoke and Bone trilogy. 
 I am hoping that the next two books will expand on the other characters and will continue the magic of the first two thirds of this one.