3-stars upon finishing, but now that I think about it, 4-stars because of how well crafted the book is.
There are a lot of things I liked about this book, but there are also a few things I didn't like. Right now, the things I didn't like stand out more than the things I did like.
So as much as I enjoy this series, I have to admit that the books written after Voyager are somewhat gratuitous. Jamie and Claire's story pretty much ends at the end of Voyager. You could stop there and be satisfied with how things turn out for them. But if you find yourself enjoying Gabaldon's writing, then you'd probably enjoy the rest of her books.