For those of us who still miss the carefully plotted and fluent exposition of traditional American cinema, three of 2016’s end-of-year releases are at least promising. They are not in the same class as Sully (reviewed in the November issue) but they all have decent plotting, fine acting and plausible characterisations. Inferno is the third movie to be adapted from Dan Brown’s Robert Langdon series, which are beginning to form a genre in their own right. In the novels and films Langdon is a Harvard professor, a symbologist, who specialises in codes and symbols. In each movie he has had…