While on her second honeymoon in the British Isles, Claire touches a boulder that hurls her back in time to the forbidden Castle Leoch with the MacKenzie clan. Not understanding the forces that brought her there, she becomes ensnared in life-threatening situations with a Scots warrior named James Fraser. But it isn't all spies and drudgery that she must endure. For amid her new surroundings and the terrors she faces, she is lured into love and passion like she's never known before.

I was lame and sore in every muscle when I woke next morning. I shuffled to the privy closet, then to the wash basin. My innards felt like churned butter. It felt as though I had been beaten with a blunt object, I reflected, then thought that that was very near the truth. The blunt object in question was visible as I came back to bed, looking now relatively harmless. Its possessor [Jamie] woke as I sat next to him, and examined me with something that looked very much like male smugness."

In this epic of imagination, time travel, and adventure, Diana Gabaldon continues the riveting story begun inOutlander.
 
Jamie Fraser is an eighteenth-century Highlander, an ex-Jacobite traitor, and a reluctant rebel in the American Revolution. His wife, Claire Randall Fraser, is a surgeon—from the twentieth century. What she knows of the future compels him to fight. What she doesn’t know may kill them both.

With one foot in America and one foot in Scotland, Jamie and Claire’s adventure spans the Revolution, from sea battles to printshops, as their paths cross with historical figures from Benjamin Franklin to Benedict Arnold.

Meanwhile, in the relative safety of the twentieth century, their daughter, Brianna, and her husband experience the unfolding drama of the Revolutionary War through Claire’s letters. But the letters can’t warn them of the threat that’s rising out of the past to overshadow their family.

Diana Gabaldon’s sweeping Outlander saga reaches new heights inAn Echo in the Bone.