This book presents a fairly persuasive case that the period of the civil war between these two was not quite the uniformly awful anarchy that is commonly depicted, and that Stephen was not the weak ruler with poor judgement that he is commonly held to be. However, I found the writing rather dry, with too much description of military manoeuvres, people switching sides and gaining or losing land, and not enough analysis, hence the relatively low rating for a non-fiction work about a period of history I am interested in.