by the vanished woman, and it was not only that of one she knew but that of one whom she trusted—a friend whose very presence gave her courage. With this recognition came a better understanding of the situation, and it was with a beaming eye and unclouded features that she tripped up the walk to meet the expectant figure and outstretched hand of Roger Upjohn.
"You here!" she exclaimed, amid smiles and blushes, as he drew her into the hall.
He at once launched forth into explanations mingled with apologies for the presumption he had shown in putting her to this inconvenience. There was trouble in the house—great trouble. Something had occurred for which an explanation must be found before morning, or the happiness and honour of more than one person now under this unhappy roof would be wrecked. He knew it was late—that she had been obliged to take a long and dreary ride alone, but her success with the problem which had once come near wrecking his own life had emboldened him to telephone to the office and—"But you are in ball-dress," he cried in amazement. "Did you think—"
"I came from a ball. Word reached me between the dances. I did not go home. I had been bidden to hurry."
He looked his appreciation, but when he spoke it was to say:
"This is the situation. Miss Digby—"
"The lady who is to be married to-morrow?"
"Who hopes to be married to-morrow."
"How, hopes?"
"Who will be married to-morrow, if a certain article lost in this house to-night can be found before any of the persons who have been dining here leave for their homes."
Violet uttered an exclamation.
"Then, Mr. Cornell—" she began.
"Mr. Cornell has our utmost confidence," Roger hastened to interpose. "But the article missing is one which he might reasonably desire to possess and which he alone of all present had the opportunity of securing. You can therefore see why he, with his pride—the pride of a man not rich, engaged to marry a woman who is—should declare that unless his innocence is established before daybreak, the doors of St. Bartholomew will remain shut to-morrow."
"But the article lost—what is it?"
"Miss Digby will give you the particulars. She is waiting to receive you," he added with a gesture towards a half-open door at their right.
Violet glanced that way, then cast her looks up and down the hall in which they stood.
"Do you know that you have not told me in whose house I am? Not hers, I know. She lives in the city."
"And you are twelve miles from Harlem. Miss Strange, you are in the Van Broecklyn mansion, famous enough you will acknowledge. Have you never been here before?"
"I have been by here, but I recognized nothing in the dark. What an exciting place for an investigation!"
"And Mr. Van Broecklyn? Have you never met him?"
"Once, when a child. He frightened me then."
"And may frighten you now; though I doubt it. Time has mellowed him. Besides, I have prepared him for what might otherwise occasion him some astonishment. Naturally he would not look for just the sort of lady investigator I am about to introduce to him."
She smiled. Violet Strange was a very charming young woman, as well as a keen prober of odd mysteries.
The meeting between herself and Miss Digby was a sympathetic one. After the first inevitable shock which the latter felt at sight of the beauty and fashionable appearance of the mysterious little being who was to solve her difficulties, her glance, which under other circumstances might have lingered unduly upon the piquant features and exquisite dressing of the fairy-like figure before her, passed at once to Violet's eyes in whose steady depths beamed an intelligence quite at odds with the coquettish dimples which so often misled the casual observer in his estimation of a character singularly subtle and well-poised.
As for the impression she herself made upon Violet—it was the same she made upon everyone. No one could look long at Florence Digby and not recognize the loftiness of her spirit and the generous nature of her impulses. In person she was tall, and as she leaned to take Violet's hand, the difference between them brought out the salient points in each, to the great admiration of the one onlooker.
Meantime for all her interest in the case in hand, Violet could not help casting a hurried look about her, in gratification of the curiosity incited by her entrance into a house signalized from its foundation by such a series of tragic events. The result was disappointing. The walls were plain, the furniture simple. Nothing suggestive in either, unless it was the fact that nothing was new, nothing modern. As it looked in the days of Burr and Hamilton so it looked to-day, even to the rather startling detail of candles which did duty on every side in place of gas.
As Violet recalled the reason for this the fascination of the past seized upon her imagination. There was no knowing where this might have carried her, had not the feverish gleam in Miss Digby's eyes warned her that the present held its own excitement. Instantly, she was all attention and listening with undivided mind to that lady's disclosures.
They were brief and to the following effect:
The dinner which had brought some half-dozen people together in this house had been given in celebration of her impending marriage. But it was also in a way meant as a compliment to one of the other guests, a Mr. Spielhagen, who, during the week, had succeeded in demonstrating to a few experts the value of a discovery he had made which would transform a great industry.
In speaking of this discovery, Miss Digby did not go into particulars, the whole matter being far beyond her understanding; but in stating its value she openly acknowledged that it was in the line of Mr. Cornell's own work, and one which involved calculations and a formula which, if prematurely disclosed, would invalidate the contract Mr. Spielhagen hoped to make, and thus destroy his present hopes.
Of this formula but two copies existed. One was locked up in a safe-deposit vault in Boston, the other he had brought into the house on his person, and it was the latter which was now missing, it having been abstracted during the evening from a manuscript of sixteen or more sheets, under circumstances which he would now endeavour to relate.
Mr. Van Broecklyn, their host, had in his melancholy life but one interest which could be called at all absorbing. This was for explosives. As a consequence, much of the talk at the dinner-table had been on Mr. Spielhagen's discovery, and the possible changes it might introduce into this especial industry. As these, worked out from a formula kept secret from the trade, could not but affect greatly Mr. Cornell's interests, she found herself listening intently, when Mr. Van Broecklyn, with an apology for his interference, ventured to remark that if Mr. Spielhagen had made a valuable discovery in this line, so had he, and one which he had substantiated by many experiments. It was not a marketable one, such as Mr. Spielhagen's was, but in his work upon the same, and in the tests which he had been led to make, he had discovered certain instances he would gladly name, which demanded exceptional procedure to be successful. If Mr. Spielhagen's method did not allow for these exceptions, nor make suitable provision for them, then Mr. Spielhagen's method would fail more times than it would succeed. Did it so allow and so provide? It would relieve him greatly to learn that it did.
The answer came quickly. Yes, it did. But later and after some further conversation, Mr. Spielhagen's confidence seemed to wane, and before they left the dinner-table, he openly declared his intention of looking over
