Suddenly she remembered the episode of the taxi on the previous evening and became galvanised to action. What a fool she had been. Seizing the receiver of the private line to the Admiralty, she demanded to be put through to Mr. Blair. Presently she heard his mellow, patient voice. No, he had heard nothing of John Dene, nor had he seen him for several days. There was a note of plaintive gratitude in Mr. Blair's voice; but Dorothy was too worried to notice it. Putting up the receiver, she snatched up her hat, jabbed the pins through it, one of them into her head, and almost throwing herself into her coat, dashed down the stairs and literally ran across Waterloo Place, down the Duke of York's steps into the Admiralty. She passed swiftly in and up to Mr. Blair's room, into which she burst with a lack of ceremony that convinced him she had already imbibed the qualities that made John Dene the terror of his existence. "I want to see Sir Lyster at once," she panted. Mr. Blair looked up at her in surprise. "He's engaged just now, Miss West," he said mildly. "Is there anything I can do?" "It doesn't matter whether he's engaged, you must go into him at once, Mr. Blair, and tell him I must see him." Mr. Blair still continued to gaze at her with bovine wonder. "Oh, you stupid creature!" Dorothy stamped her foot in her impatience. Then with a sudden movement she made for Sir Lyster's door, knocked and entered, leaving Mr. Blair gazing before him, marvelling that so short an association with John Dene should have produced such startling results. However, it was for Sir Lyster to snub her now, and he resumed his work. Sir Lyster, Sir Bridgman North and Admiral Heyworth were bending over a table on which a large plan lay spread out. Sir Lyster was the first to look up; at the sight of the flushed and excited girl his gaze became fixed. Sir Bridgman and Admiral Heyworth followed the direction of his eyes to where Dorothy stood with heaving breast and fear in her eyes. "Mr. Dene has disappeared!" she gasped without any preliminary apology. "The devil!" exclaimed Sir Bridgman. Admiral Heyworth jumped to his feet. Sir Bridgman rose and placed a chair for Dorothy into which she sank. Then she told her story, concluding with "It's all my fault for not doing something about the taxi." The three men listened without interruption. When she had concluded they looked anxiously from one to the other. It was Sir Bridgman who broke the silence. "We had better get Walton here."