In his latest monograph, The Realm of Criminal Law, Antony Duff gives us a further, magisterial statement of the vision of criminal law, its procedural framework, and its sanctioning system, which he has been developing over the past 35 years. This is Duff’s own book-length contribution to the tremendously fruitful collaborative Criminalization project. That project has already generated four edited volumes and two fine monographs by Farmer and Tadros. It will shape the field for decades to come; and it has (...) decisively laid to rest a longstanding puzzle about why, within criminal law theory, the principles underlying criminalisation had received relatively little attention as compared with those underlying, most obviously, criminal responsibility. (shrink)