For a woman in 1890, travelling to the wild archipelagos of St. Kilda off the north-east coast of Scotland was hazardous, but that was not going to stop Meredith Jolly accompanying her naturalist father on his expedition. Nothing about the journey seemed to trouble her, not even the long stay she might have to endure. But then, she met the renowned Professor Fergus Macaulay and soon had cause to fear him. As they neared their destination, their boat floundering in savage seas, Meredith is jettisoned overboard. However, she is dragged from her watery grave by a young man bearing an uncanny resemblance to Macaulay. The mysterious man, who calls himself Logan, has a dark and terrible past which is slowly revealed, at great cost to them all.