Having just read one of E. C. R. Lorac's novels, These Names Make Clues, (not one of her best, as it happens though it strengthens my suspicion that Edith Caroline Rivett, a. k. a. E. C. R. Lorac, a. k. a. Carol Carnac, was a crossword addict who would not have dreamed of starting her day's activity without finishing the one in the Times first) I have once again noted a curious aspect to Golden Age Detective (GAD) novels. The characters, if they happen to be educated literate ones, which they often are, always seem to have...