Diana Gabaldon wrote this series and in my opinion she is one of the BEST current day authors. Her characters seem so real; she did a tremendous amount of research on the time periods her stories take place in that I learn a lot, and now it's a movie series on Starz so I get to see the stories and characters come alive on tv!
The genre is labeled as romantic drama but it's a great deal of historical fiction and fantasy as well since it includes time travel. Claire is on her honeymoon in Scotland in 1945 when she falls through the stones at Craig Na Dun into 1700's Scotland where she meets Jamie Fraiser.
I literally can't put the books down even 3rd time around and can't wait until April 2nd when the next 8 episodes come out on Starz.
If you want to take a look at the Diana Gabaldon website here's the link:
http://www.dianagabaldon.com/
If you want to take a look at the Movie Series' website here's that link:
http://www.starz.com/originals/outlander