This is a very enjoyable read, with great characters and a gripping plot. While I'm not sure I completely buy into the mechanics of time travel as described in the world of this book, those details didn't bother me while I was reading. I'd recommend this, especially to fans of Outlander. While it's likely that this will become a series, the story wraps up sufficiently in order to make for a satisfying reading experience.
(Reviewed from an advance copy, courtesy of the publisher.)