The appeal of this book lay in the setting for me: Scotland and World War II, two of my favourite subjects. But when I actually got into the book, I realized that much of the story is set during the First World War (which is also interesting, just not what I expected) and that the entire novel is told in letters. This format is not always a bad thing - I loved the Guernsey Literary and Potato Peel Society - but it is definitely difficult to propel the plot in a way that doesn't seem forced while maintaining the reader's interest. Parts of this book were very compelling, but much of the plot dragged while Davey and Elspeth professed their love for each other over countless epistles written in flowery language. And it was pretty difficult to have sympathy for the main characters after the way they treated Iain... 
 Not the most compelling book - I had to put it down for awhile in the middle - but a nice, simple love story.