Phoebe's sister is the Fairy Keeper from the first book in the series, and she's ever so slightly disappointed in the world for she doesn't have any magical powers of herself (I guess you already know what is going to happen at this point). Although her sister tells her to stay away from the coast, she must takes measures when she finds a mutilated mer-folk corpse one day.
Despite there being a lot of things that were rather predictable, which I will mention hereafter, I enjoyed it quite a lot. Phoebe for one not being ordinary for one. The huge suspicion of the mer-folk against Phoebe as another thing. What happens at the end is yet another thing.
However, I was quite drawn to the story, as the mer-folk were to Phoebe. I actually liked it better than The Fairy Keeper and also in this book I preferred Phoebe's scenes over those with Sierra.
Thanks to the publisher and Netgalley for providing me with a free copy of this book in exchange for an honest review!