The story starts with a terrorist bomb at Chelsea Barracks. Then the author takes us back to his first days as a trainee constable, learning the basics: Do the trainees know the legal definitions of the crimes that they will be faced with? Do they know whether there is a power of arrest? This is a fascinating story of the world of policing, which starts in the 1960s and jumps forward to the twenty-first century. Working in urban and rural parts of...