This book is one of the most interesting and important in this six-book series, as it is the only work I've ever seen devoted exclusively to the subject of defense against multiple assailants. The author presents a large number of scenarios and their variations and how to defend against them. There is good coverage on the different types of situations. For example, the author shows several situations where you are being held by two people while the third attacks, or where your hands are even tied, forcing you to use your feet to block and strike.I think a book on this subject makes a lot of sense. From my long experience as both a student and an instructor in a number of different martial arts, multiple attacker defenses are uniformly neglected in training in the schools. This book helps to make up for this oversight. Altogether an excellent book on a frequently neglected area of training.