"Feeling this conviction, I have not hesitated to do, for Allan's sake, what I would have done for no other creature in the world. I have left my hotel, and have installed myself (with my old servant Robert) in a house opposite the house to which I traced the two women. We are alternately on the watch (quite unsuspected, I am certain, by the people opposite) day and night. All my feelings, as a gentleman and a clergyman, revolt from such an occupation as I am now engaged in; but there is no other choice. I must either do this violence to my own self-respect, or I must leave Allan, with his easy nature, and in his assailable position, to defend himself against a wretch who is prepared, I firmly believe, to take the most unscrupulous advantage of his weakness and his youth. His mother's dying entreaty has never left my memory; and, God help me, I am now degrading myself in my own eyes in consequence.
"There has been some reward already for the sacrifice. This day (Saturday) I have gained an immense advantage--I have at last seen the woman's face. She went out with her veil down as before; and Robert kept her in view, having my instructions, if she returned to the house, not to follow her back to the door. She did return to the house; and the result of my precaution was, as I had expected, to throw her off her guard. I saw her face unveiled at the window, and afterward again in the balcony. If any occasion should arise for describing her particularly, you shall have the description. At present I need only say that she looks the full age (five-and-thirty) at which you estimated her, and that she is by no means so handsome a woman as I had (I hardly know why) expected to see.
"This is all I can now tell you. If nothing more happens by Monday or Tuesday next, I shall have no choice but to apply to my lawyers for assistance; though I am most unwilling to trust this delicate and dangerous matter in other hands than mine. Setting my own feelings however, out of the question, the business which has been the cause of my journey to London is too important to be trifled with much longer as I am trifling with it now. In any and every case, depend on my keeping you informed of the progress of events, and believe me yours truly, "DECIMUS BROCK."
Midwinter secured the letter as he had secured the letter that preceded it--side by side in his pocket-book with the narrative of Allan's Dream.