The immediate cause of this was no less than the falling of Master Percy, the youngest of my pupils, into the mill-race, with imminent danger both to his life and to mine, since I had to risk myself in order to save him. Dripping and exhausted--for I was far more spent than the child--I was making for my room when Sir John, who had heard the hubbub, opened the door of his little study and asked me what was the matter. I told him of the accident, but assured him that his child was in no danger, while he listened with a rugged, immobile face, which expressed in its intense eyes and tightened lips all the emotion which he tried to conceal. "One moment! Step in here! Let me have the details!" said he, turning back through the open door. And so I found myself within that little sanctum, inside which, as I afterwards learned, no other foot had for three years been set save that of the old servant who cleaned it out. It was a round room, conforming to the shape of the tower in which it was situated, with a low ceiling, a single narrow, ivy-wreathed window, and the simplest of furniture. An old carpet, a single chair, a deal table, and a small shelf of books made up the whole contents. On the table stood a full-length photograph of a woman--I took no particular notice of the features, but I remember that a certain gracious gentleness was the prevailing impression. Beside it were a large black japanned box and one or two bundles of letters or papers fastened together with elastic bands. [Illustration: "OUR INTERVIEW WAS A SHORT ONE."] Our interview was a short one, for Sir John Bollamore perceived that I was soaked, and that I should change without delay. The incident led, however, to an instructive talk with Richards, the agent, who had never penetrated into the chamber which chance had opened to me. That very afternoon he came to me, all curiosity, and walked up and down the garden path with me, while my two charges played tennis upon the lawn beside us. "You hardly realize the exception which has been made in your favour," said he. "That room has been kept such a mystery, and Sir John's visits to it have been so regular and consistent, that an almost superstitious feeling has arisen about it in the household. I assure you that if I were to repeat to you the tales which are flying about, tales of mysterious visitors there, and of voices overheard by the servants, you might suspect that Sir John had relapsed into his old ways." "Why do you say relapsed?" I asked. He looked at me in surprise. "Is it possible," said he, "that Sir John Bollamore's previous history is unknown to you?" "Absolutely."