in March, as part of the celebration of the Queen’s Diamond Jubilee, the Prince of Wales and the Duchess of Cornwall made a weeklong tour of Scandinavia. They began in Norway (wood chopping, fisheries), continued to Sweden (sourdough, warship), and finished in Denmark (bikes, carbon-neutral kindergarten). Apparently, on such junkets, each royal gets to pick a special thing he would like to do, on top of his official duties. The Duchess’s wish was to visit the set of “The Killing,” the Danish television show. So, on the last day of the trip, while her husband played skomager—a Danish form of pool—at a nursing home, Camilla took a car to Slangerup, a town in the countryside near Copenhagen. There the cast and crew of “The Killing,” each season of which covers a single investigation, were shooting at an abandoned scrap yard.