"Yes," said Dorothy, and she proceeded to tell how it came about that the luncheon and dinners were supplied from an anonymous source.

"That's Walton," said Admiral Heyworth, and the other nodded.

For a few minutes they sat in silence, all waiting for the arrival of Colonel Walton. When the telephone bell rang, Sir Lyster started perceptibly. Taking up the receiver from the instrument he listened for a few seconds.

"Show him in," he said; then, turning to the others, he explained: "Walton is out; but Sage is here."

"Good," said Sir Bridgman, "sometimes Jack is better than his master."

Sir Lyster looked at him meaningly, and then at Dorothy.

With perfect self-possession Malcolm Sage entered, gave a short, jerky bow, and without invitation drew a chair up opposite to where Dorothy was sitting. For a moment he gazed at her and saw the anxiety in her eyes.

"Don't be alarmed," he said quietly, "the situation is well in hand."

There was the ghost of a smile about the corners of his mouth.

"Is he safe?" enquired Dorothy, leaning forward, whilst the three men looked at Sage as if not quite sure of his sanity.

"I can only repeat what I have said," replied Sage, "the situation is well in hand."

"But how the devil----" began Sir Bridgman.

"I should like to ask Miss West a few questions," said Sage.

Sir Bridgman subsided.

"Why did you come here?" he asked, turning to Dorothy.

"Mr. Dene didn't come this morning. I waited until past two, then I rang up the Ritzton," she paused.

"Go on," said Sage.

"They told me he had not been back since yesterday morning."

"And then?" enquired Sage.

"I rang up Mr. Blair. He had heard nothing, so I thought I had better come round and--and--I'm afraid I burst in here very rudely. Mr.

Blair----"

"You did quite right, Miss West," said Sir Lyster. "Why didn't you act before?"

Dorothy felt Sage's eyes were burning through her brain, so intent was his gaze. "I had forgotten about the taxi. I--I--thought he might be unwell," said Dorothy.

"Why?"

"Well," she began, and then paused.

"Go on," said Sage encouragingly.

"He has seemed rather strange for some days," she said, "his memory was very bad. As a rule he has a wonderful memory, and never makes a note."

"How was his memory bad?"

"He seemed to forget what he had written, and was always having letters turned up."

Sage nodded. "Go on," he said.

"Then," she continued, "he seemed to want always to put things off. He was undecided; so unlike his normal self. Most of the things he asked me to attend to."

"And that made you think he was ill," suggested Sage.

"Yes," she said, "that and other things."

"What other things?"

Dorothy screwed up her eyebrows, her head on one side, as if striving to find words to express what was in her mind. "His manner was strange," she began. "It is very difficult to give instances; but previously he had always been so pleasant and--and----"

"Unconscious of himself, shall we say?" suggested Sage.

"That's it," she said brightly. "He was just Mr. Dene. Afterwards he seemed to be always watching me, as if not quite sure who I was. It was almost uncanny. I thought perhaps----" She hesitated.

"What?"

"That he was being drugged," she concluded reluctantly.

"When did you first notice this?"

"Let me see," said Dorothy. "This is Tuesday. It was on Thursday morning that I first noticed it. What struck me then was that he said, 'Good morning' when he came in."

"And what did he usually say?" enquired Sage.

"He used to say 'morning,' or what really sounded more like 'morn,'"

she said with a smile.

"Thank you," said Sage. "Unless these gentlemen have any further questions to put to you, there is nothing more to be done at present."

"But is he----" she began, then she paused.

"I should not be unnecessarily alarmed, Miss West, if I were you," said Sage. "Above all, keep your own counsel. Mr. Dene disapproves of people who talk."

"I know," said Dorothy, rising and drawing herself up with dignity.

"I regard your prompt action as highly commendable, Miss West," said Sir Lyster. "You will, of course, continue in attendance at the office until you hear further. If anything unusual transpires, please get into touch with me immediately, even to the extent of----" he paused a moment.

"Bursting in as you did just now," said Sir Bridgman with a laugh.

"It's the real John Dene manner."

"Exactly," said Sir Lyster.