The sound of the muffled knocker, announcing a visitor, was heard the moment after Mr. Henry spoke, and Mr. Hunter started as though struck by a pistol-shot. At a calmer time he might have had more command over himself; but the sudden announcement of the presence of the man in town--which fact he had not been cognisant of--had startled him to tremor. That Gwinn, and nobody else, was knocking for admittance, seemed a certainty to his shattered nerves. 'I cannot see him: I cannot see him!' he exclaimed, in agitation; and he backed away from the room door, unconscious what he did in his confused fear, his lips blanching to a deadly whiteness. Mr. Henry moved up and took his hand. 'James, there has been estrangement between us on this point for years. As I asked you once before, I now ask you again: confide in me and let me help you. Whatever the dreadful secret may be, you shall find me your true brother.' 'Hush!' breathed Mr. Hunter, moving from his brother in his scared alarm. 'Dreadful secret! who says it? There is no dreadful secret. Oh Henry! hush! hush! The man is coming in! You must leave us.' Not the dreaded Gwinn, but Austin Clay. He was the one who entered. Mr. Hunter sat down, breathing heavily, the blood coming back to his face; he nearly fainted in the revulsion of feeling brought by the relief. Broken in spirit, health and nerves alike shattered, the slightest thing was now sufficient to agitate him. 'You are ill, sir!' exclaimed Austin, advancing with concern. 'No--no--I am not ill. A momentary spasm; that's all. I am subject to it.' Mr. Henry moved to the door in vexation. There was to be no more brotherly confidence between them now than there had formerly been. He spoke as he went, without turning round. 'I will come in again by-and-by, James, and see how Louisa is.' The departure seemed a positive relief to Mr. Hunter. He spoke quietly enough to Austin Clay. 'Who has been at the office to-day?' 'Let me see,' returned Austin, with a purposed carelessness. 'Lyall came, and Thompson----' 'Not men on business, not men on business,' Mr. Hunter interrupted with feverish eagerness. 'Strangers.' 'Gwinn of Ketterford,' answered Austin, with the same assumption of carelessness. 'He came twice. No other strangers have called, I think.' Whether his brother's request, that he should be enlightened as to the 'dreadful secret,' had rendered Mr. Hunter suspicious that others might surmise there was a secret, certain it is that he looked up sharply as Austin spoke, keenly regarding his countenance, noting the sound of his voice. 'What did he want?' 'He wanted you, sir. I said you were not to be seen. I let him suppose that you were too ill to be seen. Bailey, who was in the counting-house at the time, gave him the gratuitous information that Mrs. Hunter was very ill--in danger.'