I have never heard of Sharon but after devouring this in one sitting and was left thinking WTF. My heart was beating so fast at the end I thought I might have a heart attack. This book is gripping, you simply can not put it down. The writing is superb. I fell in the story and although it was a sad book it was a proper thriller. I think this will sit well with fans of gone girl. I have only ever heard of the falklands from when Argentina attacked so it was good to read parts from the islanders point of view. The book begins with Catrin working and plotting something we assume is her committing suicide but she talks a lot about being a killer. We find that she has split from her husband Ben and her two boys died falling off a cliff in her best friends car. She can not forgive Rachel, her best friend and we wonder if her plotting is about Rachel. When a little boy goes missing and two hundred whales are beached Catrin's plan spiral out of control. When she ends up having to euthanise the mammals the press call her a cold hearted killer. Later that night Catrin and Callum find the little boy on Catrin's land. When Catrin's plans change we wonder if she has lost the plot and killed Peter, Rachels son . Did she kill Peter ? Is she crazy ?