"In obedience to an impulse. I always yield to impulses. They impress me as constituting Nature's telegraphs. I have a favourite theory that we all contain a neatly devised adaptation of Marconi's wireless system, and the time may come when the secret will be scientifically laid bare. Then, don't you see, it will be possible for a man in London to ring up a sympathetic soul in San Francisco. At present the code is not understood. It is not even properly named, so people are apt to distrust impulses."
He rattled on so pleasantly that Edith, absorbed by the agony of her brother's disappearance and possible disgrace, could not conceal an expression of blank amazement at his levity.
Brett instantly became apologetic.
"Pray forgive my apparent flippancy, Miss Talbot," he said. "I am really in earnest. I believe that a flying visit to Paris just now must unquestionably advance us an important stage in this inquiry. Let me explain exactly what I mean. Here is a letter from your brother, in handwriting which you and others best qualified to judge declare to be undeniably his. It also bears postmarks which would demonstrate to a court of law that it was posted in Paris last night and received here to-day. But it does not follow that it was written in Paris; it might have been written anywhere. Now, according to the police, there is an entry in the visitors' book at the Grand Hotel which appears to prove that your brother wrote his name therein on Tuesday night. If the handwriting in the Grand Hotel register corresponds beyond all doubt with that in this letter and envelope, then your brother must be in Paris. If it does not, he is not there. I am convinced that the latter hypothesis is correct, but to make doubly sure I will go and see with my own eyes. There now—I owed you an explanation, and I have barely time to catch my train. Good-bye. I will wire you in the morning."
He placed the mysterious letter in his note-book, gave them a parting smile, and was gone.
He managed to catch the 8.15, which started punctually, the sole remnant of railway virtue possessed by the Chatham and South Eastern line. A restful porter, quickened into active life by a half-crown tip, found him a vacant seat in a first-class smoking carriage, and Brett's hasty glance round the compartment revealed that his travelling companions, as far as Dover, at any rate, were severely respectable Britons bound for the Riviera.
The harbour station at Dover wore its usual aspect of dejected misery. The hurrying passengers pushed and jostled each other in their frenzied efforts to board the steamer, for the average British tourist has a rooted belief that such pushing and jostling and banging of apoplectic portmanteaus against the legs of others are absolutely necessary if he would not be left behind.
With an experience born of many voyages, Brett quickly noted the direction of the wind and the vessel's bearings. A stiff breeze had brought up a moderate sea, and the barrister dumped down his bag and flung himself into a chair on what a novice would regard as the weather side of the charthouse. He bore the discomfort for a few minutes, and was rewarded for his foresight by possessing the most sequestered nook on deck when the vessel turned her head seawards and began one of the shortest, but perhaps the most disagreeable, voyages in the world.
Having retained his seat long enough to establish a proprietary right therein, Brett rose and made a short tour of the ship. To distinguish any one on deck was almost out of the question. The passengers were huddled up in indefinable shapes, and there was hardly light sufficient to effect a stumbling progress over the multitude of hand-baggage. So the barrister dived down the companion-way and cannoned against a burly individual who had propped himself against a bulkhead on the main deck saloon.
Something hard in the man's pockets gave Brett a sharp rap, and when they separated with mutual apologies, he laughed silently.