Tristan - hot Scot warrior from the 13th century. Alpha protector type, but without the fancy-alphahole tendencies that can be found in so many alpha males. He's Laird of his clan and dealing with the Viking invasion of Scotland (historical truth) along with King Alexander and the clans of Scotland.
Raina - 21st century woman who's heart was broken a decade ago that Cupid decides to take back in time to give her a chance to be "outside" her normal existence and learn she might be able to trust again. He never intended them to actually fall in love.
Raina and Tristan played off each other nicely and I enjoyed watching them hesitantly grow toward one another. The paranormal aspect wasn't overdone at all. Cupid couldn't just wave his hand and magically do anything (he had to talk Father Time into sending him and Raina back to the past), nor were either of the protagonists anything unnatural (no vamps, etc, so don't let the "paranormal" genre throw you off).
There was secondary plot revolving around an ambitious relative of Tristan who was too cowardly to challenge Tristan directly for the lairdship of the clan. While I appreciate the need for additional words in this book, I identified the villain the instant I found out there was one. I wish the author hadn't made it seem so obvious who must be behind the plot to get Tristan. So, to clarify - I liked the additional plot, just wished it hadn't been so clear-cut who was behind it if the author was going to make us wait to find out who the villain was.
I'm glad I picked this book up by Ms. Drake and hope to see more from her in the future.