"Next I asked for the handkerchief. Mr. Fraser asked me into his office to look at it. I saw a woman-Miss Clarke it was-in there and declined to go. Instead, I examined the handkerchief outside. I don't know that my purpose there can be made clear to you. It was a possibility that there would be perfume on the handkerchief, and the woman in the office might use perfume. I didn't want to confuse the odors. Miss Clarke was not in the bank when I arrived; she had gone to luncheon.
"Instantly I got the handkerchief I noticed the odor of perfume-violet perfume. Perfume is used by a great many women, by very few men. I asked how many women were employed in the bank. There were three. I handed the scented handkerchief to Mr. Hatch, removed all odor of the clinging perfume from my hands with my own handkerchief and also handed that to Mr. Hatch, so as to completely rid myself of the odor.
"Then I started through the bank and spoke to every person in it, standing close to them so that I might catch the odor if they used it. Miss Clarke was the first person who I found used it-but the perfume she used was a strong rose odor. Then I went on until I came to Mr. Dunston. The identical odor of the handkerchief he revealed to me by drawing out his own handkerchief while I talked to him."
Dunston looked a little startled, but said nothing; instead he glanced at Miss Clarke, who sat listening, interestedly. He could not read the expression on her face.
"This much done," continued The Thinking Machine, "we retired to Cashier West's office. There I knew the burglars had entered; there I saw a powerful chemical solution had been applied to the granite around the sockets of the protecting steel bars to soften the stone. Its direct effect is to make it of chalklike consistency. I was also curious to know if any noise made in that room would attract attention in the outer office, so I upset a heavy chair, then looked outside. No one moved or looked back; therefore no one heard.
"Here I explained to President Fraser and to Mr. West why I connected some one in the bank with the burglary. It was because of the scent on the handkerchief. It would be tedious to repeat the detailed explanation I had to give them. I sent Mr. Hatch to find out, first, if Miss Clarke here had ever used violet perfume instead of rose; also to find out if any members of Mr. West's family used any perfume, particularly violet. I knew that Mr. Dunston used it.
"Then I asked Mr. Fraser if he had sought to raise any large sum of money. He told me the truth. But Mr. West did not tell me the truth in answer to a question along the same lines. Now I know why. It was because as cashier of the bank he was not supposed to operate in stocks, yet he has made a fortune at it. He didn't want Fraser to know this, and willfully misrepresented the facts.
"Then came the search. I expected to find just what was found, money, but considerably more of it. Miss Willis objected, Mr. Dunston objected and Miss Clarke fainted in the arms of Mr. Fraser. I read the motives of each aright. Dunston objected because he is an egotistical young man and, being young, is foolish. He considered it an insult. Miss Willis objected also through a feeling of pride."
The Thinking Machine paused for a moment, locked his fingers behind his head and leaned far back in his chair.
"Shall I tell what happened next?" he asked, "or will you tell it?"
Everyone in the room knew it was a question to the guilty person. Which? Whom? There came no answer, and after a moment The Thinking Machine resumed, quietly, very quietly.
"Miss Clarke fainted in Mr. Fraser's arms. While leaning against him, and while he stroked her hair and tried to soothe her, she took from the bosom of her loose shirtwaist a bundle of money, ten thousand dollars, and slipped it into the inside pocket of Mr. Fraser's coat."
There was deathlike silence.
"It's a lie!" screamed the girl, and she rose to her feet with anger-distorted face. "It's a lie!"
Dunston arose suddenly and went to her. With his arm about her he turned defiantly to The Thinking Machine, who had not moved or altered his position in the slightest. Dunston said nothing, because there seemed to be nothing to say.
"Into the inside pocket of Mr. Fraser's coat," The Thinking Machine repeated. "When she removed her arms his scarf pin clung to the lace on one of her sleeves. That I saw. That pin could not have caught on her sleeve where it did if her hand had not been to the coat pocket. Having passed this sum of money-her pitiful share of the theft-she agreed to the search."
"It's a lie!" shrieked the girl again. And her every tone and every gesture said it was the truth. Dunston gazed into her eyes with horror in his own and his arm fell limply. Still he said nothing.
"Of course nothing was found," the quiet voice went on. "When I discovered the bank notes in Mr. Fraser's pocket I smelled of them-seeking the odor, this time not of violet perfume, but of rose perfume. I found it."
Suddenly the girl whose face had shown only anger and defiance leaned over with her head in her hands and wept bitterly. It was a confession. Dunston stood beside her, helplessly; finally his hand was slowly extended and he stroked her hair.
"Go on, please," he said to Professor Van Dusen, meekly. His suffering was no less than hers.
"These facts were important, but not conclusive," said The Thinking Machine, "so next, with Mr. Hatch's aid here, I ascertained other things about Miss Clarke. I found out that when she went out to luncheon that day she purchased some powerful rose perfume; that, contrary to custom, she went home; that she used it liberally in her room; and that she destroyed a large bottle of violet perfume which you, Mr. Dunston, had given her. I ascertained also that her room was disarranged, particularly the couch. I assume from this that when she went to the office in the morning she did not have the money about her; that she left it hidden in the couch; that through fear of its discovery she rushed back home to get it; that she put it inside her shirtwaist, and there she had it when the search was made. Am I right, Miss Clarke?"
The girl nodded her head and looked up with piteous, tear-stained face.
"That night Miss Clarke called on me. She came ostensibly to tell me that the package of money, ten thousand dollars, had disappeared again. I knew that previously by telephone, and I knew, too, that she had that money then about her. She has it now. Will you give it up?"
Without a word the girl drew out the bundle of money, ten thousand dollars. Detective Mallory took it, held it, amazed for an instant, then passed it to The Thinking Machine, who sniffed at it.
"An odor of strong rose perfume," he said. Then: "Miss Clarke also told me that she had worked in a bank which had been robbed under circumstances identical with this by one William Dineen, and expressed the belief that he had something to do with this. Mr. Hatch ascertained that two of Dineen's pals were living in Cambridge. He found their rooms and searched them, later giving the address to the police.
"Now, why did Miss Clarke tell me that? I considered it in all points. She told me either to aid honestly in the effort to catch the thief, or to divert suspicion in another direction. Knowing as much as I did then, I reasoned it was to divert suspicion from you, Mr. Dunston, and from herself possibly. Dineen is in prison, and was there three months before this robbery; I believed she knew that. His pals are the two men in the other room; they are the men who aided Dineen in the robbery of the Hartford bank, with Miss Clarke's assistance; they are the men who robbed the Ralston National with her assistance. She herself indicated her profit from the Hartford robbery to me by a remark she made indicating that she had not found it necessary to work for two years from the time she left the Hartford bank until she became Mr. Fraser's secretary."
There was a pause. Miss Clarke sat sobbing, while Dunston stood near her studying the toe of his shoe. After awhile the girl became more calm.
"Miss Clarke, would you like to explain anything?" asked The Thinking Machine. His voice was gentle, even deferential.
"Nothing," she said, "except admit it all-all. I have nothing to conceal. I went to the bank, as I went to the bank in Hartford, for the purpose of robbery, with the assistance of those men in the next room. We have worked together for years. I planned this robbery; I had the opportunity, and availed myself of it, to put a solution on the sockets of the steel bars of the window in Mr. West's room, which would gradually destroy the granite and make it possible to pull out the bars. This took weeks, but I could reach that room safely from Mr. Fraser's.
"I had the opportunity to leave the window unfastened and did so. I dressed in men's clothing and accompanied those two men to the bank. We crept in the window, after pulling the bars out. The men attacked the night watchman and bound him. The handkerchief of Mr. West's I happened to pick up in the office one afternoon a month ago and took it home. There it got the odor of perfume from being in a bureau with my things. On the night we went to the bank I needed something to put about my neck and used it. In the bank I dropped it. We had arranged all details at night, when I met them."
She stopped and looked at Dunston, a long, lingering look, that sent the blood to his face. It was not an appeal; it was nothing save the woman love in her, mingled with desperation.
"I intended to leave the bank in a little while," she went on. "Not immediately, because I was afraid that would attract attention, but after a few weeks. And then, too, I wanted to get forever out of sight of this man," and she indicated Dunston.
"Why?" he asked.
"Because I loved you as no woman ever loved a man before," she said, "and I was not worthy. There was another reason, too-I am married already. This man, Gustave Meyer, is my husband."
She paused and fumbled nervously at the veil fastening at her throat. Silence lay over the room; The Thinking Machine reached behind him and picked up the shabby-looking gripsack which had passed unnoticed.
"Are there any more questions?" the girl asked, at last.
"I think not," said The Thinking Machine.
"And, Mr. Dunston, you will give me credit for some good, won't you-some good in that I loved you?" she pleaded.
"My God!" he exclaimed in a sudden burst of feeling.
"Look out!" shouted The Thinking Machine.
He had seen the girl's hand fly to her hat, saw it drawn suddenly away, saw something slender flash at her breast. But it was too late. She had driven a heavy hat pin straight through her breast, piercing the heart. She died in the arms of the man she loved, with his tears on her face.
Detective Mallory appeared before the two prisoners in an adjoining room.
"Miss Clarke has confessed," he said.
"Well, the little devil!" exclaimed Meyer. "I knew some day she would throw us. I'll kill her!"
"It isn't necessary," remarked Mallory.
In the room where the girl lay The Thinking Machine pushed with his foot the shabby-looking grip toward President Fraser and West.
"There's the money," he said.
"Where-how did you get it?"
"Ask Mr. Hatch."
"Professor Van Dusen told me to search the rooms of those men in there, find the shabbiest looking bag or receptacle that was securely locked, and bring it to him. I-I did so. I found it under the bed, but I didn't know what was in it until he opened it."