and good breeding which is, or should be, the best-marked attribute of an aristocracy. It was impossible to imagine either in rags, but, given such a transformation, each would be notable because of the amazing difference that would exist between garb and mien.

It must not be imagined that Theydon indulged in this close analysis of the physical characteristics of two complete strangers while his cab was wheeling into the scurry of traffic in Cranbourn Street. Rather did he essay a third time to light the cigarette which he still held between his lips. And yet a third time was his intent balked.

A policeman stopped the east-bound stream of vehicles somewhat suddenly at the corner of Charing Cross road; owing to the mud, the taxi skidded a few feet beyond the line; a lamp was torn off by a heavy wagon coming south; and a fierce argument between taxi driver and policeman resulted in "numbers" being demanded for future vengeance. Then Theydon took a hand in the dispute, poured oil on the troubled waters by tipping the policeman half a crown and the driver half a sovereign—these sums being his private estimate of damages to dignity and lamp—and the journey was resumed, with a net loss, to the person who had absolutely nothing to do with the affair, of twelve and sixpence in money and nearly ten minutes in time.

Theydon was not rich, as shall be seen in due course, but he was generous and impulsive. He hated the notion of any one suffering for having done him a service, and the taxi man might reasonably be deemed a real benefactor on that sloppy night.

So far as he was concerned, the delay of ten minutes was of no consequence. It only meant a slightly deferred snuggling down into an easy chair in his flat with a book and a pipe. That is how he would have expressed himself if questioned on the point. In reality it influenced and controlled his future in the most vital way, because, once the cab had crossed Oxford Street and turned into the quiet thoroughfare on which the first block of Innesmore Mansions abutted, he passed into a new phase of existence.

The cigarette, lighted at last after the altercation, had filled the cab with smoke to such an extent that Theydon lowered a window. At that moment the driver was slowing down to take the corner of the even more secluded road which contained Innesmore Mansions and the gardens appertaining thereto, and nothing else. Necessarily, Theydon was looking out, and he was very greatly surprised at seeing the unknown gentleman of the theater walking rapidly round the same corner.

He could not be mistaken. The stranger tilted back his umbrella and raised his eyes to ascertain the name of the street, as though he was not quite sure of his whereabouts, and the glare of a lamp fell directly on his clean-cut, almost classical face.

Being thus occupied, he did not glance at the passing cab, or recognition might possibly have been mutual—possibly, though not probably, because, during that brief pause on the steps of the theater, he stood beside Theydon; hence, he was half-turned toward his daughter while they were discussing the night's immediate program.

In itself the fact that he had gone in the direction of Innesmore Mansions rather than toward the Constitutional Club was in nowise remarkable. Nevertheless, he had deceived his daughter—deceived her intentionally, and the knowledge came as a shock to his unsuspected critic in Theydon.

He did not look the sort of man who would stoop to petty evasion of the truth. It was as though a statue of Praxiteles, miraculously gifted with life, should express its emotions, not in Attic Greek, but in the up-to-date slang of the Strand.

"Well, I'm dashed!" said Theydon, or words to that effect, and his cab sped on to the third doorway. Innesmore Mansions arranged its roomy flats in blocks of six, and he occupied No. 18.

He held a florin in readiness; the rain, now falling heavily, did not encourage any loitering on the pavement. For all that, he saw out of the tail of his eye that the other man was approaching, though he had paused to examine the numbers blazoned on a lamp over the first doorway.

"Good night, sir, and thank you!" said the taxi driver.

The cab made off as Theydon ran up a short flight of steps. Innesmore Mansions did not boast elevators. The flats were comfortable, but not absurdly expensive, and their inmates climbed stairs cheerfully; at most, they had only to mount to a second storey. Each block owned a uniformed porter, who, on a night like this, even in May, needed rousing from his lair by a bell if in demand.

Theydon took the stairs two at a stride, opened the door of No. 18, which, with No. 17, occupied the top landing. He was valeted and cooked for by an ex-sergeant of the Army Service Corps and his wife, an admirable couple named Bates, and the male of the species appeared before Theydon had removed coat and opera hat in the tiny hall.

"Bring my tray in fifteen minutes, Bates, and that will be all for tonight," said Theydon.

"Yes, sir," said Bates. "Remarkable change in the weather, sir."

"Rotten. Who would have expected this downpour after such a fine day?"

Bates took the coat and hat, and Theydon entered his sitting room, a spacious, square apartment which faced the gardens. He had purposely prevented Bates from coming immediately with his nightly fare, which consisted of a glass of milk and a plate of bread and butter.

Truth to tell, the artistic temperament contains a spice of curiosity, which is, in some sense, an exercise of the perceptive faculties. Theydon wanted to raise a window and look out, an unusual action, and one which, therefore, would induce Bates to wonder as to its cause.

For once in his life a man who bothered his head very little about other people's business was puzzled, and meant to ascertain whether or not the unknown was really calling on some resident in Innesmore Mansions. It was a harmless bit of espionage. Theydon scarcely knew the names of the other dwellers in his own block, and his acquaintance did not even go that far with any of the remaining tenants of 48 fiats, all told.

Still, to a writer, the vagaries of the tall stranger were decidedly interesting, so he did open a window, and did thrust his head out, and was just in time to see the owner of the limousine which would call at the Constitutional Club in a quarter of an hour mount the steps leading to Nos. 13-18. Somehow, the discovery gave Theydon a veritable thrill.

Could that pretty girl's father, by any chance, be coming to visit him? A wildly improbable development had been whittled down to a five-to-one chance. He closed the window and waited, yes, actually waited, for the bell to ring!

The sitting room door was open, and it faced the hall door. Footsteps sounded sharply on the slate steps of the stairway; when Theydon heard some one climbing to the topmost landing he was almost convinced that, as usual, the unexpected was about to happen. It did happen, but took its own peculiar path. The unknown rang the bell of No. 17, and, after a slight delay, was admitted.

Theydon smiled at the anticlimax. A trivial mystery had developed along strictly orthodox lines. A rather good-looking and distinctly well-dressed lady, a Mrs. Lester, occupied No. 17. She lived alone, too, he believed. At any rate, he had never seen any other person, except an elderly servant, enter or leave the opposite flat, and he had encountered the tenant herself so seldom that he was not quite certain of recognizing her apart from the environment of the staircase which provided their occasional meeting place.

Then he sighed. Romance evidently denied her magic presence to one who wooed her assiduously by his pen. He was yet to learn that the alluring sprite had not only favored him with her attentions during the past twenty minutes, but meant to stick to him like his own shadow for many a day. And he frowned, too.

He did not approve of that pretty girl's father visiting the attractive Mrs. Lester in