I nodded. I saw what he meant at once.
"Well, the principle involved in that story explains the presence of the rings in the midst of this stack of letters. Franklin Van Burnam, if he is the murderer of his sister-in-law, is one of the subtlest villains this city has ever produced, and knowing that, if once suspected, every secret drawer and professed hiding-place within his reach would be searched, he put these dangerous evidences of his guilt in a place so conspicuous, and yet so little likely to attract attention, that even so old a hand as myself did not think of looking for them there."
He had finished, and the look he gave me was for myself alone.
"And now, madam," said he, "that I have stated the facts of the case against Franklin Van Burnam, has not the moment come for you to show your appreciation of my good nature by a corresponding show of confidence on your part?"
I answered with a distinct negative. "There is too much that is unexplained as yet in your case against Franklin," I objected. "You have shown that he had motive for the murder and that he was connected more or less intimately with the crime we are considering, but you have by no means explained all the phenomena accompanying this tragedy. How, for instance, do you account for Mrs. Van Burnam's whim in changing her clothing, if her brother-in-law, instead of her husband, was her companion at the Hotel D–?"
You see I was determined to know the whole story before introducing Miss Oliver's name into this complication.
He who had seen through the devices of so many women in his day did not see through mine, perhaps because he took a certain professional pleasure in making his views on this subject clear to the attentive Inspector. At all events, this is the way he responded to my half-curious, half-ironical question:
"A crime planned and perpetrated for the purpose I have just mentioned, Miss Butterworth, could not have been a simple one under any circumstances. But conceived as this one was by a man of more than ordinary intelligence, and carried out with a skill and precaution little short of marvellous, the features which it presents are of such a varying and subtle character that only by the exercise of a certain amount of imagination can they be understood at all. Such an imagination I possess, but how can I be sure that you do?"
"By testing it," I suggested.
"Very good, madam, I will. Not from actual knowledge, then, but from a certain insight I have acquired in my long dealing with such matters, I have come to the conclusion that Franklin Van Burnam did not in the beginning plan to kill this woman in his father's house.
"On the contrary, he had fixed upon a hotel room as the scene of the conflict he foresaw between them, and that he might carry it on without endangering their good names, had urged her to meet him the next morning in the semi-disguise of a gossamer over her fine dress and a heavy veil over her striking features; making the pretence, no doubt, of this being the more appropriate costume for her to appear in before the old gentleman should he so far concede to her demands as to take her to the steamer. For himself he had planned the adoption of a disfiguring duster which had been hanging for a long time in a closet on the ground-floor of the building in Duane Street. All this promised well, but when the time came and he was about to leave his office, his brother unexpectedly appeared and asked for the key to their father's house. Disconcerted no doubt by the appearance of the very person he least wished to see, and astonished by a request so out of keeping with all that had hitherto passed between them, he nevertheless was in too much haste to question him, so gave him what he wanted and Howard went away. As soon after as he could lock his desk and don his hat, Franklin followed, and merely stopping to cover his coat with the old duster, he went out and hastened towards the place of meeting. Under most circumstances all this might have happened without the brothers encountering each other again, but a temporary obstruction on the sidewalk having, as we know, detained Howard, Franklin was enabled to approach him sufficiently close to see him draw his pocket-handkerchief out of his pocket, and with it the keys which he had just given him. The latter fell, and as there was a great pounding of iron going on in the building just over their heads, Howard did not perceive his loss but went quickly on. Franklin coming up behind him picked up the keys, and with a thought, or perhaps as yet with no thought, of the use to which they might be applied, put them in his own pocket before proceeding on his way.
"New York is a large place, and much can take place in it without comment. Franklin Van Burnam and his sister-in-law met and went together to the Hotel D– without being either recognized or suspected till later developments drew attention to them. That she should consent to accompany him to this place, and that after she was there should submit, as she did, to taking all the business of the scheme upon herself, would be inconceivable in a woman of a self-respecting character; but Louise Van Burnam cared for little save her own aggrandisement, and rather enjoyed, so far as we can see, this very doubtful escapade, whose real meaning and murderous purpose she was so far from understanding.
"As the steamer, contrary to all expectation, had not yet been sighted off Fire Island, they took a room and prepared to wait for it. That is, she prepared to wait. He had no intention of waiting for its arrival or of going to it when it came; he only wanted his letter. But Louise Van Burnam was not the woman to relinquish it till she had obtained the price she had put on it, and he becoming very soon aware of this fact, began to ask himself if he should not be obliged to resort to extreme measures in order to regain it. One chance only remained for avoiding these. He would seem to embrace her later and probably much-talked-of scheme of presenting herself before his father in his own house rather than at the steamer; and by urging her to make its success more certain by a different style of dress from that she wore, induce a change of clothing, during which he might come upon the letter he was more than confident she carried about her person. Had this plan worked; had he been able to seize upon this compromising bit of paper, even at the cost of a scratch or two from her vigorous fingers, we should not be sitting here at this moment trying to account for the most complicated crime on record. But Louise Van Burnam, while weak and volatile enough to enjoy the romantic features of this transformation scene, even going so far as to write out the order herself with the same effort at disguise she had used in registering their assumed names at the desk, was not entirely his dupe, and having hidden the letter in her shoe–"
"What!" I cried.
"Having hidden the letter in her shoe," repeated Mr. Gryce, with his finest smile, "she had but to signify that the boots sent by Altman were a size too small, for her to retain her secret and keep the one article she traded upon from his envious clutch. You seem struck dumb by this, Miss Butterworth. Have I enlightened you on a point that has hitherto troubled you?"
"Don't ask me; don't look at me." As if he ever looked at any one! "Your perspicacity is amazing, but I will try and not show my sense of it, if it is going to make you stop."
He smiled; the Inspector smiled: neither understood me.
"Very well then, I will go on; but the non-change of shoes had to be accounted for, Miss Butterworth."
"You are right; and it has been, of course."
"Have you any better explanation to give?"
I had, or thought I had, and the words trembled on my tongue. But I restrained myself under an air of great impatience. "Time is flying!" I urged, with as near a simulation of his own manner in saying the words as I could affect. "Go on, Mr. Gryce."
And he did, though my manner evidently puzzled him.
"Being foiled in this his last attempt, this smooth and diabolical villain hesitated no longer in carrying out the scheme which had doubtless been maturing in his mind ever since he dropped the key of his father's house into his own pocket. His brother's wife must die, but not in a hotel room with him for a companion. Though scorned, detested, and a stumbling-block in the way of the whole family's future happiness and prosperity, she still was a Van Burnam, and no shadow must fall upon her reputation. Further than this, for he loved life and his own reputation also, and did not mean to endanger either by this act of self-preservation, she must perish as if from accident, or by some blow so undiscoverable that it would be laid to natural causes. He thought he knew how this might be brought about. He had seen her put on her hat with a very thin and sharp pin, and he had heard how one thrust into a certain spot in the spine would effect death without a struggle. A wound like that would be small; almost indiscernible. True it would take skill to inflict it, and it would require dissimulation to bring her into the proper position for the contemplated thrust; but he was not lacking in either of these characteristics; and so he set himself to the task he had promised himself, and with such success that ere long the two left the hotel and proceeded to the house in Gramercy Park with all the caution necessary for preserving a secret which meant reputation to the one, and liberty, if not life, to the other. That he and not she felt the greater need of secrecy, witness their whole conduct, and when, their goal reached, she and not he put the money into the driver's hand, the last act of this curious drama of opposing motives was reached, and only the final catastrophe was wanting.