quote:

Since the successful conclusion of the affair of The Dilatory Calvinist, my promising young pupil, Mr. Sherlock Homes, has been wont to correspond with me in many cases, some of which must forever remain protected from the public gaze, for they involve the very highest personages of the
Realm. However, I understand that he is detained in Switzerland on important business, so I am unable to offer a full explanation for The Roslin Mystery, which I now lay before you as the Preface to a far less interesting work.