This is a very good Young Adult read which could easily crossover into Adult fiction. The content is geared towards 16+. Eddie and Elsie are twins and one day on their 11th birthday, Eddie drowned in the sea. His body was never recovered. This is a family in crisis, the trauma of their loss causing all kinds of dysfunction amongst the remaining four. The parents are continuously openly arguing. Elsie feels completely ignored by her parents and suffers bullying at school on a daily basis. Her brother Dillon is having nightmares so regularly, leaving Elsie to wonder what really happened the day her twin drowned. Then she discovers free diving and the story takes off from there. This story is full of emotion and deals with all kinds of issues. It has been described as a dark page turner but I think its a pretty realistic version of what could happen to a family in a situation like this. It certainly is a page turner, with characters that you will both love and some you will love to hate. Highly recommended teenage read but be warned that it does have some very adult content.