From a small town outside Edinburgh comes the news that a young boy has been recounting vivid recollections of a past life: a perfect description of an island off the coast of Scotland which he couldn't possibly know, and a house there, where he claims to have spent his former life. The boy's mother asks Isabel Dalhousie to investigate his claims, but when she learns about the unusual story of the family who lived there, Isabel is suddenly faced with a situation of extraordinary delicacy that will require all of her skills both as sleuth and philosopher.