The year is 1945 and Claire Beauchamp Randall, a former British combat nurse, is on holiday in Scotland with her husband, looking forward to becoming reacquainted after the war's long separation. Like most practical women, Claire hardly expects her curiosity to get the better of her. But an ancient stone circle near her lodgings holds an eerie fascination, and when she innocently touches one of the giant boulders, she's hurtled backward in time more than two hundred years, to 1743.

Alone where no lady should be alone, and far from the familiar comforts of her other life, Claire's usual resourcefulness is tested to the limit. The merciless garrison captain so feared by others bears an uncanny resemblance to the husband she has just left behind. Her own odd circumstances expose her to accusations of witchcraft. And the strands of a political intrigue she doesn't understand threaten to ensnare her at every turn.

But of all the perils her new life holds, none is more disquieting than her growing feelings for James Fraser, the gallant young Scot she is forced to marry for her own protection. Sworn by his wedding vows to keep her from harm, Jamie's passion for Claire goes beyond duty. As she struggles with the memories of another lifetime, she is forced to make an agonizing and fateful choice, and learns ultimately that a man's instinct to protect the woman he loves is as old as time.