Sam's father was an undercover agent, killed in the line of duty. Now Sam has travelled to Orkney, to piece together the puzzle of his past. What she finds is a tiny island remote enough to shelter someone who doesn't want to be found. An island small enough to keep a secret. The conclusion to the trilogy. I absolutely loved the writing, the concept of this book and the main character... [Coyle's] emotional journey is quite mesmerizing to read. The grief is just heartbreaking but she is determined and moves ahead on her quest'