Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Disappointing

Compared to her well-done trilogy, this book is like it's written by an different writer. The characters are poorly developed and one-dimensional. This makes it hard to really care about them. More interesting was the portion of the story set in the 1700's; Eilish was somewhat interesting. Erin seemed too weak and whiny of a character to be the other half of the book. Likewise, it's hard to feel any sympathy or care about Charlie and whether he walks again or not. He's just there.The plot is also thin--I kept thinking "When is something going to happen?" There's not enough foreshadowing of some of the events that occur towards the end in Erin's part, and a miraculous event near the end seems too convienently resolved.Finally, in the trilogy, Ms. Marley made us a part of the music and in undestanding how it works and affects other people. This one never quite reaches that height.