Below the Surface by Karen Harper

At first I was not very impressed with the flow of the story, it seemed very amateurish to me.  But, as the story developed you could see the stronger story line, twists along the way that made you wonder and then an interesting ending.  This book is about twin sisters who run a diving and salvaging company.  One of the twins, Daria, dies and Bree, her sister is determined to figure out what happened.  Many times Bree puts herself in danger and does not know who to trust.  This was a very easy read, I read it in one day, but it was enjoyable and kept me intrigued until the end.