"It's Heywood—at Victoria Station. He's asking for you," he exclaimed.

Walter went to the instrument, and through it heard the words: "The boat train has just gone, sir. Mrs. Caldwell waited for the young lady until the train went off, but she did not arrive. She seemed annoyed and disappointed. Dr. Weirmarsh has been on the platform, evidently watching also."

"Thanks, Heywood," replied Fetherston sharply; "that was all I wanted to know. Good day."

He replaced the receiver, and, walking back to his friend against the window, explained: "A simple little inquiry I was making regarding a departure by the boat train for Paris—that was all."

But he reflected that if Weirmarsh had been watching it must have been to warn the French police over at Calais of the coming of Enid. No action was too dastardly for that unscrupulous scoundrel.

Yet, for the present at least, the girl remained safe. The chief peril was that in which Sir Hugh was placed, now that he had openly defied the doctor.

On the previous evening he had been in the drawing-room at Hill Street when Sir Hugh had returned from interviewing the caller. By his countenance and manner he at once realised that the breach had been widened.

The one thought by which he was obsessed was how he should save Sir Hugh from disgrace. His connection with the Criminal Investigation Department placed at his disposal a marvellous network of sources of information, amazing as they were unsuspected. He was secretly glad that at last the old fellow had resolved to face bankruptcy rather than go farther in that strange career of crime, yet, at the same time, there was serious danger—for Weirmarsh was a man so unscrupulous and so vindictive that the penalty of his defiance must assuredly be a severe one.

The very presence of the doctor on the platform of the South Eastern station at Victoria that morning showed that he did not intend to allow the grass to grow beneath his feet.

The novelist was still standing near the long window, looking aimlessly down upon the Embankment, with its hurrying foot-passengers and whirling taxis.