You will readily guess that I did not relate my adventures at the Aldobrandi palace; the Marquise was too prudish, and Don Ottavio too much taken up with politics to be a useful adviser in a love affair. But I went to my artist friend, who knew Rome from end to end, and asked him what he thought of it. "I think you have seen the ghost of Lucrezia Borgia," he said. "What a danger you have run into! She was dangerous enough when she was alive; imagine how much more she must be now she is dead! It makes me shudder to think of it." "You are surely half joking?" "So Monsieur is an atheist and a philosopher and does not believe in the most orthodox explanations. Very well, then. What do you say to another hypothesis? Suppose the old woman lets the house to women who are equal to accosting men who pass by in the street; there are old women sufficiently depraved to drive such a trade." "Wonderful," I said. "Then I must look like a saint, for the old dame never suggested any such offers. You insult me. Besides, my friend, remember the furnishing of the house: a man must be possessed by the devil to be satisfied with it." "Then it is a ghost, there can be no doubt about it. But wait a bit, I have still another idea. You have mistaken the house--ah! that is it; near a garden? With a little low door to it.... Why, that is my dear friend Rosina's! Eighteen months ago she was the ornament of that street. It is true she has become blind in one eye, but that is a trifle.... She still has a very lovely profile." None of these explanations satisfied me. When evening came I walked slowly past the house of Lucrezia, but I did not see anything. I went up and down past it with no further result. Three or four evenings followed, and I danced attendance under her windows as I went home from the Aldobrandi palace, with ever the same want of success. I had begun to forget the mysterious occupant of No. 13, when, passing towards midnight through the lane, I distinctly heard a woman's light laugh behind the shutter of the window at which the giver of the flowers had appeared to me. Twice I heard that little laugh, and I could not prevent feeling slightly afraid, when just at that moment I saw come out at the other end of the street a group of penitents, closely hooded, with tapers in hand, bearing a corpse to burial. When they had gone by I took up my stand once more under the window; but this time I did not hear anything. I tried to throw pebbles; and I even called out more or less loudly; but still no one appeared; and, a heavy shower coming on, I was obliged to beat a retreat. I am ashamed to tell how many times I stood before that accursed house without succeeding in solving the riddle that tormented me. Once only did I pass along the Viccolo di Madama Lucrezia with Don Ottavio and his ubiquitous Abbé. "That is the house of Lucrezia," I said. I saw him change colour.