Outlander series by Diana Gabaldon... This book is book 7 of the series..
This series is one of the best I have ever read.. and am reading. only problem is the books are soooo big.. lol.. so it is taking me a long time to finish one. I have been getting the series from the Library.. unfortunately they dont have book 7.5.. so I guess I am forced to go and buy it.. will be on my list of items to buy next month.. They do have book 8.. Written in My Own Heart's Blood, so I wont have to buy that one..
I have put the link in so you can check out the series yourself.. It is also a TV series on Starz.. so if you get that.. you can watch that there too..