A friend wanted to know what this book/series was about so here's a copy/paste from Goodreads about it~
The year is 1945. Claire
Randall, a former combat nurse, is back from the war and reunited with
her husband on a second honeymoon--when she walks through a standing
stone in one of the ancient stone circles that dot the British Isles.
Suddenly she is a Sassenach--an "outlander"--in a Scotland torn by war
and raiding Highland clans in the year of Our Lord...1743.
back in time by forces she cannot understand, Claire is catapulted into
intrigues and dangers that may threaten her life...and shatter her
heart. For here she meets James Fraser, a gallant young Scots warrior,
and becomes a woman torn between fidelity and desire...and between two
vastly different men in two irreconcilable lives.