Martin looked down his nose. “If you ask me the question, sir,” he said with reserve, “I had not known him enter that room since we came here this year. He preferred to sit in the library in the evenings. That evening he only remained with Mrs. Manderson for a few minutes. Then he and Mr. Marlowe started immediately.”

“You saw them start?”

“Yes, sir. They took the direction of Bishopsbridge.”

“And you saw Mr. Manderson again later?”

“After an hour or thereabouts, sir, in the library. That would have been about a quarter past eleven, I should say; I had noticed eleven striking from the church. I may say I am peculiarly quick of hearing, sir.”

“Mr. Manderson had rung the bell for you, I suppose. Yes? And what passed when you answered it?”

“Mr. Manderson had put out the decanter of whisky and a syphon and glass, sir, from the cupboard where he kept them—”

Trent held up his hand. “While we are on that point, Martin, I want to ask you plainly, did Mr. Manderson drink very much? You understand this is not impertinent curiosity on my part. I want you to tell me, because it may possibly help in the clearing up of this case.”

“Perfectly, sir,” replied Martin gravely. “I have no hesitation in telling you what I have already told the inspector. Mr. Manderson was, considering his position in life, a remarkably abstemious man. In my four years of service with him I never knew anything of an alcoholic nature pass his lips, except a glass or two of wine at dinner, very rarely a little at luncheon, and from time to time a whisky and soda before going to bed. He never seemed to form a habit of it. Often I used to find his glass in the morning with only a little soda water in it; sometimes he would have been having whisky with it, but never much. He never was particular about his drinks; ordinary soda was what he preferred, though I had ventured to suggest some of the natural minerals, having personally acquired a taste for them in my previous service. He used to keep them in the cupboard here, because he had a great dislike of being waited on more than was necessary. It was an understood thing that I never came near him after dinner unless sent for. And when he sent for anything, he liked it brought quick, and to be left alone again at once. He hated to be asked if he required anything more. Amazingly simple in his tastes, sir, Mr. Manderson was.”

“Very well; and he rang for you that night about a quarter past eleven. Now can you remember exactly what he said?”