This book by Dougie Brimson, titled "Mad Army: The Face of Football Violence" delves into the world of Ultras, football hooligans and the sport itself. 

The author, known for his focus on the subject, takes a deep look into the culture and psychology behind the violent factions in football. 

With a genre of action and sports, this book is a must-read for any football enthusiast interested in the darker side of the sport.