This is more along the lines of 3.5 stars. I loved the couple and adored the Hero, the Duke of Sussex (totally in love with him). However, I thought the mystery aspect of the story was a little weak. I did like the romance but the dialogue & some of the scenes did get a tad melodramatic towards the end. Overall though, I really enjoyed the book. It is beautifully written and the author has a talent for painting a scene.
As a side note, I think the cover of this book is absolutely beautiful.