Dragonfly in Amber by Diana Gabaldon #2

For twenty years, Claire Randall has kept her secrets. But now she is returning with her grown daughter to the mysteries of Scotland’s mist-shrouded Highlands. Here Claire plans to reveal a truth as shocking as the events that gave it birth: the secret of an ancient circle of standing stones, the secret of a love that transcends centuries, and the truth of a man named Jamie Fraser—a Highland warrior whose gallantry once drew the young Claire from the security of her century to the dangers of his.
 
Claire’s spellbinding journey continues through the intrigue-ridden French court and the menace of Jacobite plots, to the Highlands of Scotland, through war and death in a desperate fight to save both the child and the man she loves.