This is the second book in the Watersong series. After Gemma went missing in Wake (Book#1), Harper, Alex and Daniel spend endless times and always on the lookout for her trails. They have reached out to the police, read books on sirens and even went to seek for spirit's help. All these went without any results until one day Daniel found an article in the local newspaper that could lead to where the sirens are.
While everyone is searching for Gemma, she discovered her siren-self further. She is staying alive by swimming in the ocean. No matter how much she resisted the change, there are things she could not control. The more she knew about the sirens, the more she felt uncomfortable. The only reason she followed the sirens is to stay alive and keep her loved ones save but how long could she be away? How long until they found her? What would it take to return to her loved ones?
p/s: I seriously didn't know Watersong is a quartet! Now I wait for the final book to be out in August 2013. Mr.August, please come quickly!