"Surely," said Bosbysh.e.l.l. "I"ll have the men bring them in at once."
As soon as the superintendent had left the room, Drummond requested that the door of the grille be placed in its usual position, and Cochrane set it up level with the floor, leaning against the supports at the side.
"Is that the way it always stays?" inquired the Secret Service man.
"No, sir, but it"s pretty heavy to handle, and I thought you just wanted to get a general idea of things."
"I"d like to see it in place, if you don"t mind. Here, I"ll help you with it--but we better slip our coats off, for it looks like a man"s-sized job," and he removed his coat as he spoke.
After Cochrane had followed his example, the two of them hung the heavy door from its hinges and stepped back to get the effect. But Drummond"s eyes were fixed, not upon the entrance to the grille, but on the middle of Cochrane"s back, and, when the opportunity offered an instant later, he shifted his gaze to the waist of the elder man"s trousers. Something that he saw there caused the shadow of a smile to flit across his face.
"Thanks," he said. "That will do nicely," and he made a quick gesture to Preston that he would like to have Cochrane leave the vault.
"Very much obliged, Mr. Cochrane," said the director. "We won"t bother you any more. You might ask those men to hurry in with the bars, if you will."
And the weigher, pausing only to secure his coat, left the vault.
"Why all the stage setting?" inquired Preston. "You don"t suspect...."
"I don"t suspect a thing," Drummond smiled, searching for his own coat, "beyond the fact that the solution to the mystery is so simple as to be almost absurd. By the way, have you noticed those scratches on the bars of the grille, about four feet from the floor?"
"No, I hadn"t," admitted the director. "But what of them? These vaults aren"t new, you know, and I dare say you"d find similar marks on the grille bars in any of the others."
"I hope not," Drummond replied, grimly, "for that would almost certainly mean a shortage of gold in other sections of the Mint.
Incidentally, has all the rest of the gold been weighed?"
"Every ounce of it."
"Nothing missing?"
"Outside of the seven hundred pounds from this vault, not a particle."
"Good--then I"ll be willing to lay a small wager that you can"t find the duplicates of these scratches anywhere else in the Mint." And Drummond smiled at the director"s perplexity.
When the men arrived with a truck loaded with gold bars, they stacked them--at the superintendent"s direction--along the side of the grille nearest the vault entrance.
"Is that the way they are usually arranged?" inquired Drummond.
"Yes--the grille bars are of tempered steel and the openings between them are too small to permit anyone to put his hand through. Therefore, as we are somewhat pressed for s.p.a.ce, we stack them up right along the outer wall of the grille and then work back. It saves time and labor in bringing them in."
"Is this the way the door of the grille ordinarily hangs?"
Bosbysh.e.l.l inspected it a moment before he replied.
"Yes," he said. "It appears to be all right. It was purposely made to swing clear of the floor and the ceiling so that it might not become jammed. The combination and the use of the seal prevents its being opened by anyone who has no business in the grille."
"And the seal was intact when you came in yesterday afternoon?"
"It was."
"Thanks," said Drummond; "that was all I wanted to know," and he made his way upstairs with a smile which seemed to say that his vacation in the Maine woods had not been indefinitely postponed.
Once back in the director"s office, the government operative asked permission to use the telephone, and, calling the Philadelphia office of the Secret Service, requested that three agents be a.s.signed to meet him down town as soon as possible.
"Have you a record of the home address of the people employed in the Mint?" Drummond inquired of the director, as he hung up the receiver.
"Surely," said Preston, producing a typewritten list from the drawer of his desk.
"I"ll borrow this for a while, if I may. I"ll probably be back with it before three o"clock--and bring some news with me, too," and the operative was out of the room before Preston could frame a single question.
As a matter of fact, the clock in the director"s office pointed to two-thirty when Drummond returned, accompanied by the three men who had been a.s.signed to a.s.sist him.
"Have you discovered anything?" Preston demanded.
"Let"s have Cochrane up here first," Drummond smiled. "I can"t be positive until I"ve talked to him. You might have the superintendent in, too. He"ll be interested in developments, I think."
Bosbysh.e.l.l was the first to arrive, and, at Drummond"s request, took up a position on the far side of the room. As soon as he had entered, two of the other Secret Service men ranged themselves on the other side of the doorway and, the moment Cochrane came in, closed the door behind him.
"Cochrane," said Drummond, "what did you do with the seven hundred pounds of gold that you took from Vault No. Six during the past few weeks?"
"What--what--" stammered the weigher.
"There"s no use bluffing," continued the detective. "We"ve got the goods on you. The only thing missing is the gold itself, and the sooner you turn it over the more lenient the government will be with you. I know how you got the bars out of the grille--a piece of bent wire was sufficient to dislodge them from the top of the pile nearest the grille bars and it was easy to slip them under the door. No wonder the seal was never tampered with. It wasn"t necessary for you to go inside the grille at all.
"But, more than that, I know how you carried the bars, one at a time, out of the Mint. It took these three men less than an hour this afternoon to find the tailor who fixed the false pocket in the front of your trousers--the next time you try a job of this kind you better attend to all these details yourself--and it needed only one look at your suspenders this morning to see that they were a good deal wider and heavier than necessary. That long coat you are in the habit of wearing is just the thing to cover up any suspicious bulge in your garments and the guard at the door, knowing you, would never think of telling you to stop unless you carried a package or something else contrary to orders.
"The people in your neighborhood say that they"ve seen queer bluish lights in the bas.e.m.e.nt of your house on Woodland Avenue. So I suspect you"ve been melting that gold up and hiding it somewhere, ready for a quick getaway.
"Yes, Cochrane, we"ve got the goods on you and if you want to save half of a twenty-year sentence--which at your age means life--come across with the information. Where is the gold?"
"In the old sewer pipe," faltered the weigher, who appeared to have aged ten years while Drummond was speaking. "In the old sewer pipe that leads from my bas.e.m.e.nt."
"Good!" exclaimed Drummond. "I think Mr. Preston will use his influence with the court to see that your sentence isn"t any heavier than necessary. It"s worth that much to guard the Mint against future losses of the same kind, isn"t it, Mr. Director?"
"It surely is," replied Preston. "But how in the name of Heaven did you get the answer so quickly?"
Drummond delayed his answer until Cochrane, accompanied by the three Secret Service men, had left the room. Then--
"Nothing but common sense," he said. "You remember those scratches I called your attention to--the ones on the side of the grille bars? They were a clear indication of the way in which the gold had been taken from the grille--knocked down from the top of the pile with a piece of wire and pulled under the door of the grille. That eliminated Jamison and Strubel immediately. They needn"t have gone to that trouble, even if it had been possible for them to get into the vault in the first place.
"But I had my suspicions of Cochrane when he was unable to open the vault door. That pointed to nervousness, and nervousness indicated a guilty conscience. I made the hanging of the grille door an excuse to get him to shed his coat--though I did want to see whether the door came all the way down to the floor--and I noted that his suspenders were very broad and his trousers abnormally wide around the waist. He didn"t want to take any chances with that extra fourteen pounds of gold, you know.
It would never do to drop it in the street.
"The rest is merely corroborative. I found that bluish lights had been observed in the bas.e.m.e.nt of Cochrane"s house, and one of my men located the tailor who had enlarged his trousers. That"s really all there was to it."
With that Drummond started to the door, only to be stopped by Director Preston"s inquiry as to where he was going.
"On my vacation, which you interrupted this morning," replied the Secret Service man.