It is the spring of 1767, and the vengeful Erasmus Kemp has had the mutinous sailors of his father's ship brought back to London to stand trial on piracy charges. Much to Kemp's dismay, the Irish fiddler Sullivan has escaped, and retrieving him proves too much in the midst of overseeing the dramatic legal case and a new business venture in the northern coal and steel industries of Thorpe. But the two men's paths are about to collide once again, for Sullivan is also on his way to Thorpe to fulfill the dying wish of his shipmate.

With historical sweep and deep pathos, Unsworth explores the struggles of the downtrodden against the rich and the powerful.