The detectives sat moodily thoughtful for uncounted minutes. Finally Detective Mallory broke the silence.
"There seems to be no question but that any clew that might have come from either of the automobiles is disposed of unless it is the fact that we now know one of the thieves was wounded. I readily see how the theft could have been committed by a man as bold as this fellow. Now we must concentrate all our efforts to running down the invited guests and learning just where they were that evening. All of you will have to get on this job and hustle it. We know that the Burglar did present an invitation-card with a name on it."
The detectives went their respective ways and then Detective Mallory deigned to receive representatives of the press, among them Hutchinson Hatch. Hatch was worried. He knew a whole lot of things, but they didn't do him any good. He felt that he could print nothing as it stood, yet he would not tell the police, because that would give it to everyone else, and he had a picture of how the Supreme Intelligence would tangle it if he got hold of it.
"Well, boys," said Detective Mallory smilingly, when the press filed in, "there's nothing to say. Frankly, I will tell you that we have not been able to learn anything – at least anything that can be given out. You know, of course, about the finding of the two automobiles that figured in the case, and the blood-stained cushion?"
The press nodded collectively.
"Well, that's all there is yet. My men are still at work, but I'm a little afraid the gold plate will never be found. It has probably been melted up. The cleverness of the thieves you can judge for yourself by the manner in which they handled the automobiles."
And yet Hatch was not surprised when, late that night, Police Headquarters made known the latest sensation. This was a bulletin, based on a telephone message from Stuyvesant Randolph to the effect that the gold plate had been returned by express to Seven Oaks. This mystified the police beyond description; but official mystification was as nothing to Hatch's state of mind. He knew of the scene in Dick Herbert's room and remembered Mr. Randolph's threat.
"Then Dick did have the plate," he told himself.
CHAPTER VIII
Whole flocks of detectives, reporters, and newspaper artists appeared at Seven Oaks early next morning. It had been too late to press an investigation the night before. The newspapers had only time telephonically to confirm the return of the plate. Now the investigators unanimously voiced one sentiment: "Show us!"
Hatch arrived in the party headed by Detective Mallory, with Downey and Cunningham trailing. Blanton was off somewhere with his little list, presumably still at it. Mr. Randolph had not come down to breakfast when the investigators arrived, but had given his servant permission to exhibit the plate, the wrappings in which it had come, and the string wherewith it had been tied.
The plate arrived in a heavy paper-board box, covered twice over with a plain piece of stiff brown paper, which had no markings save the address and the "paid" stamp of the express company. Detective Mallory devoted himself first to the address. It was:
Mr. Stuyvesant Randolph,
"Seven Oaks,"
via Merton.
In the upper left-hand corner were scribbled the words:
From John Smith,
State Street,
Watertown.
Detectives Mallory, Downey, and Cunningham studied the handwriting on the paper minutely.
"It's a man's," said Detective Downey.
"It's a woman's," said Detective Cunningham.
"It's a child's," said Detective Mallory.
"Whatever it is, it is disguised," said Hatch.
He was inclined to agree with Detective Cunningham that it was a woman's purposely altered, and in that event – Great Cæsar! There came that flock of seven-column heads again! And he couldn't open the bottle!
The simple story of the arrival of the gold plate at Seven Oaks was told thrillingly by the servant.
"It was eight o'clock last night," he said. "I was standing in the hall here. Mr. and Mrs. Randolph were still at the dinner table. They dined alone. Suddenly I heard the sound of waggon-wheels on the granolithic road in front of the house. I listened intently. Yes, it was waggon-wheels."
The detectives exchanged significant glances.
"I heard the waggon stop," the servant went on in an awed tone. "Still I listened. Then came the sound of footsteps on the walk and then on the steps. I walked slowly along the hall toward the front door. As I did so the bell rang."
"Yes, ting-a-ling-a-ling, we know. Go on," Hatch interrupted impatiently.
"I opened the door," the servant continued. "A man stood there with a package. He was a burly fellow. 'Mr. Randolph live here?' he asked gruffly. 'Yes,' I said. 'Here's a package for him,' said the man. 'Sign here.' I took the package and signed a book he gave me, and – and – "
"In other words," Hatch interrupted again, "an expressman brought the package here, you signed for it, and he went away?"
The servant stared at him haughtily.
"Yes, that's it," he said coldly.
A few minutes later Mr. Randolph in person appeared. He glanced at Hatch with a little surprise in his manner, nodded curtly, then turned to the detectives.
He could not add to the information the servant had given. His plate had been returned, pre-paid. The matter was at an end so far as he was concerned. There seemed to be no need of further investigation.
"How about the jewelry that was stolen from your other guests?" demanded Detective Mallory.
"Of course, there's that," said Mr. Randolph. "It had passed out of my mind."
"Instead of being at an end this case has just begun," the detective declared emphatically.
Mr. Randolph seemed to have no further interest in the matter. He started out, then turned back at the door, and made a slight motion to Hatch which the reporter readily understood. As a result Hatch and Mr. Randolph were closeted together in a small room across the hall a few minutes later.
"May I ask your occupation, Mr. Hatch?" inquired Mr. Randolph.
"I'm a reporter," was the reply.
"A reporter?" Mr. Randolph seemed surprised. "Of course, when I saw you in Mr. Herbert's rooms," he went on after a little pause, "I met you only as his friend. You saw what happened there. Now, may I ask you what you intend to publish about this affair?"
Hatch considered the question a moment. There seemed to be no objection to telling.
"I can't publish anything until I know everything, or until the police act," he confessed frankly. "I had been talking to Dick Herbert in a general way about this case when you arrived yesterday. I knew several things, or thought I did, that the police do not even suspect. But, of course, I can print only just what the police know and say."
"I'm glad of that – very glad of it," said Mr. Randolph. "It seems to have been a freak of some sort on Mr. Herbert's part, and, candidly, I can't understand it. Of course he returned the plate, as I knew he would."
"Do you really believe he is the man who came here as the Burglar?" asked Hatch curiously.
"I should not have done what you saw me do if I had not been absolutely certain," Mr. Randolph explained. "One of the things, particularly, that was called to my attention – I don't know that you know of it – is the fact that the Burglar had a cleft in his chin. You know, of course, that Mr. Herbert has such a cleft. Then there is the invitation-card with his name. Everything together makes it conclusive."
Mr. Randolph and the reporter shook hands. Three hours later the press and police had uncovered the Watertown end of the mystery as to how the express package had been sent. It was explained by the driver of an express waggon there and absorbed by greedily listening ears.
"The boss told me to call at No. 410 State Street and get a bundle," the driver explained. "I think somebody telephoned to him to send the waggon. I went up there yesterday morning. It's a small house, back a couple of hundred feet from the street, and has a stone fence around it. I opened the gate, went in, and rang the bell.