Entry Island, written by accomplished author Peter May, has two story lines: a murder mystery in present day on a Canadian barrier island and a tale of forbidden love in mid 19th century Scotland. Both involve the same main characters, Sime and Kristy.  

Sime, short for Simon but pronounced “Sheem,” is our protagonist. In current times, he is investigating Kirsty as the key suspect in the murder of her mega rich husband. He is overcome by the notion that they have met before. She assures them they have not.   

So begin his dreams of times past with her in Scotland.