"Ah! you don't believe it!" cried the old fellow. "But you will see.

Your curiosity has, no doubt, led you to misjudge me. It was only to have been expected. I ought to have guarded my secret better."

Neither man spoke. Both had their eyes fixed upon the grey face of the old millionaire before them. They recollected his despair before he had retired to rest, and remembered, too, the tender care of his faithful Levi.

The clock chimed the half-hour--half-past three in the morning.

The night had been fraught by so many surprises that neither Charlie nor his friend could believe in the grim reality of it all. They never suspected that that fine mansion was practically unfurnished, or that its millionaire owner practically lived the life of a pauper. Had not Charlie been well aware of his master's shrewdness in his business and clearness in his financial operations, he would have believed it all due to an unbalanced brain. But there was no madness in Samuel Statham. He was as sane as they were. All his eccentricity was evidently directed towards one purpose.

As he stood there he practically told them so.

"You misjudge me!" said he, his grey face relaxing in a smile. "You think me mad--eh? Well, you are not alone in that. A good many people believe the same of me. I am gratified to think they believe it. It is my intention that they should."

"But, Mr Statham, we have asked you a question to which you have refused to answer. We wish to know what has become of Marion Rolfe."

"You were engaged to her--eh? Yes, I know," responded the old man.

"For that very reason I refuse to tell you. I can only rea.s.sure you, however, that you need experience no anxiety."

"But I do. I love her!"

"Then I am very sorry, your mind must still continue to be exercised.

At present I cannot tell you anything."

"Why?"

"Have I not already told you? I am expecting a visitor."

It was all the satisfaction they could obtain.

Charlie longed for an opportunity to refer to the gruesome object in that locked room upstairs. The man who had so suddenly reappeared and sworn vengeance upon the great financier was dead--fallen a victim, no doubt, to the old man's clever cunning. He had, without doubt, been enticed there to his death. The secret reason of the white-enamelled door at the top of the stairs was now quite plain. In that house was a terrible death-trap, as deadly as it was unexpected.

They held knowledge of the truth. How would the old man act?

Contrary to their expectations, he remained quite indifferent. He even offered them a drink, which they refused.

His refusal to tell them anything regarding Marion and his treatment of Maud had incensed them, and they both were bitterly antagonistic towards him. He was, no doubt, playing a huge game of bluff. His disregard of their discoveries was in order to lessen their importance, and his story of a visitor told to gain time.

Probably he intended to make good his escape.

Both were expecting every moment that his coolness would break down, and that he would suggest that they kept silence as to what lay concealed on the floor above.

Indeed, they were not mistaken, for of a sudden he turned to them, and in rather strained voice said:

"Now, gentlemen, I admit that you have discovered my secret; that my position is--well--a disagreeable one, to say the least. Is there any real reason why you should divulge it--at least for the present?"

Charlie shrugged his shoulders, and Max at the same time realised that a deadly fear was creeping back upon the old man, whose enormous wealth had stifled all human feeling from his soul.

"I merely ask your indulgence," said the old man, in a low, eager tone.

"For how long?"

"For a day--maybe for a week--or perhaps a month. I cannot tell."

"That means that we preserve the secret indefinitely?"

"Until the arrival of my visitor."

"Ah! the visitor!" repeated Max, with a grin of disbelief. "When do you expect the visit?"

"I have expected it during many months," was the millionaire's brief reply.

"And you can tell us nothing more? Is not your story a somewhat lame one?"

"Very--I quite admit it. But I can only a.s.sure you of its truth."

"It is not often you speak the truth, Mr Statham, is it?" asked Max, pointedly.

"I suppose I am like many another man," was his reply. "I only speak it when obliged!"

As he uttered those words there sounded in the hall the loud electric bell of the front door. It was rung twice, whereupon old Sam drew himself up in an instant in an att.i.tude of alertness.

"The visitor!" he gasped, raising his bony finger. "The long-expected caller!"

The two rings were evidently a pre-arranged signal.

They heard old Levi shuffling outside. The door opened, and he stood expectant, looking at his master, but uttering no word.

"Gentlemen," exclaimed old Sam. "If you will permit me, I will go and receive my visitor. May I ask you to remain here until I return to you--return to answer any inquiries you may be pleased to put to me?"

The old fellow was quite calm again. He seemed to have braced himself up to meet his visitor, whoever he or she might be. It was one of his secret agents, Charlie thought, without a doubt.

Both men consented, and old Sam withdrew with Levi.

"Please remain here. I ask you both to respect my wishes," he said, and going out, closed the door behind him.

The two men listened with strained ears.

They heard the sound of footsteps outside, but as far as they could distinguish, no word was spoken. Whether the mysterious visitor was male or female they could not ascertain.

For several moments they stood at the door, listening.

Then Max, unable to resist his own curiosity, opened the door slightly, and peered into the hall.

But only Levi was there, his back turned towards the door. His master and his visitor had ascended the stairs together, pa.s.sing the iron door which now stood open for the first time.

Max beckoned Charlie, who, looking outside into the hall, saw Levi standing with both hands pressed to his brow in an att.i.tude of wildest despair.

His agitation was evidently for his master's safety.

A visitor at a quarter to four in the morning was unusual, to say the least. Who could it be?