This volume is a compact, but complete, treatment of the famous 1772 Somerset decision by Lord Mansfield that confirmed that slavery was not legal within Great Britain (but left slavery intact in British colonies and possessions). The key actor upon which the entire narrative focuses is abolitionist Granville Sharp, who initiated several cases challenging the legality of slavery in Britain until he was finally successful in Somerset. His crusade demonstrates the merits of not being easily discouraged by initial setbacks. Given the fact that he subsisted on and financed litigation through a clerk's salary, one can only stand in amazement at his determination to terminate the practice. The author does a good job in discussing the background and character of Lord Mansfield, certainly one of the most influential actors in the development of English law. The reconstruction of the trial itself is well done. While the research is predominantly based upon secondary sources, as is appropriate in a "popular" history, the narrative is quite easy for the non-lawyer as well as the legal professional to read and profit from--no mean accomplishment in legal history volumes. The endnotes identify valuable sources for further reading on this topic. I found chapter 16, "The Mansfield Judgment," particularly interesting in that apparently there is no 100% official text of Mansfield's decision. The author also does a good job in discussing post-decision developments that reflected the impact of the holding, including some in America. A good solid treatment of an incredibily important legal development.