I

Mr. Ricardo, when the excitements of the Villa Rose were done with, returned to Grosvenor Square and resumed the busy, unnecessary life of an amateur. But the studios had lost their savour, artists their attractiveness, and even the Russian opera seemed a trifle flat. Life was altogether a disappointment; Fate, like an actress at a restaurant, had taken the wooden pestle in her hand and stirred all the sparkle out of the champagne; Mr. Ricardo languished--until one unforgettable morning.

He was sitting disconsolately at his breakfast-table when the door was burst open and a square, stout man, with the blue, shaven face of a French comedian, flung himself into the room. Ricardo sprang towards the new-comer with a cry of delight.

"My dear Hanaud!"

He seized his visitor by the arm, feeling it to make sure that here, in flesh and blood, stood the man who had introduced him to the acutest sensations of his life. He turned towards his butler, who was still bleating expostulations in the doorway at the unceremonious irruption of the French detective.

"Another place, Burton, at once," he cried, and as soon as he and Hanaud were alone: "What good wind blows you to London?"

"Business, my friend. The disappearance of bullion somewhere on the line between Paris and London. But it is finished. Yes, I take a holiday."

A light had suddenly flashed in Mr. Ricardo's eyes, and was now no less suddenly extinguished. Hanaud paid no attention whatever to his friend's disappointment. He pounced upon a piece of silver which adorned the tablecloth and took it over to the window.

"Everything is as it should be, my friend," he exclaimed, with a grin. "Grosvenor Square, the Times open at the money column, and a false antique upon the table. Thus I have dreamed of you. All Mr. Ricardo is in that sentence."

Ricardo laughed nervously. Recollection made him wary of Hanaud's sarcasms. He was shy even to protest the genuineness of his silver. But, indeed, he had not the time. For the door opened again and once more the butler appeared. On this occasion, however, he was alone.

"Mr. Calladine would like to speak to you, sir," he said.

"Calladine!" cried Ricardo in an extreme surprise. "That is the most extraordinary thing." He looked at the clock upon his mantelpiece. It was barely half-past eight. "At this hour, too?"

"Mr. Calladine is still wearing evening dress," the butler remarked.

Ricardo started in his chair. He began to dream of possibilities; and here was Hanaud miraculously at his side.

"Where is Mr. Calladine?" he asked.

"I have shown him into the library."

"Good," said Mr. Ricardo. "I will come to him."

But he was in no hurry. He sat and let his thoughts play with this incident of Calladine's early visit.

"It is very odd," he said. "I have not seen Calladine for months--no, nor has anyone. Yet, a little while ago, no one was more often seen."

He fell apparently into a muse, but he was merely seeking to provoke Hanaud's curiosity. In this attempt, however, he failed. Hanaud continued placidly to eat his breakfast, so that Mr. Ricardo was compelled to volunteer the story which he was burning to tell.

"Drink your coffee, Hanaud, and you shall hear about Calladine."

Hanaud grunted with resignation, and Mr. Ricardo flowed on:

"Calladine was one of England's young men. Everybody said so. He was going to do very wonderful things as soon as he had made up his mind exactly what sort of wonderful things he was going to do. Meanwhile, you met him in Scotland, at Newmarket, at Ascot, at Cowes, in the box of some great lady at the Opera--not before half-past ten in the evening there--in any fine house where the candles that night happened to be lit. He went everywhere, and then a day came and he went nowhere. There was no scandal, no trouble, not a whisper against his good name. He simply vanished. For a little while a few people asked: 'What has become of Calladine?' But there never was any answer, and London has no time for unanswered questions. Other promising young men dined in his place. Calladine had joined the huge legion of the Come-to-nothings. No one even seemed to pass him in the street. Now unexpectedly, at half-past eight in the morning, and in evening dress, he calls upon me. 'Why?' I ask myself."

Mr. Ricardo sank once more into a reverie. Hanaud watched him with a broadening smile of pure enjoyment.

"And in time, I suppose," he remarked casually, "you will perhaps ask him?"

Mr. Ricardo sprang out of his pose to his feet.

"Before I discuss serious things with an acquaintance," he said with a scathing dignity, "I make it a rule to revive my impressions of his personality. The cigarettes are in the crystal box."

"They would be," said Hanaud, unabashed, as Ricardo stalked from the room. But in five minutes Mr. Ricardo came running back, all his composure gone.

"It is the greatest good fortune that you, my friend, should have chosen this morning to visit me," he cried, and Hanaud nodded with a little grimace of resignation.

"There goes my holiday. You shall command me now and always. I will make the acquaintance of your young friend."

He rose up and followed Ricardo into his study, where a young man was nervously pacing the floor.

"Mr. Calladine," said Ricardo. "This is Mr. Hanaud."

The young man turned eagerly. He was tall, with a noticeable elegance and distinction, and the face which he showed to Hanaud was, in spite of its agitation, remarkably handsome.

"I am very glad," he said. "You are not an official of this country. You can advise--without yourself taking action, if you'll be so good."

Hanaud frowned. He bent his eyes uncompromisingly upon Calladine.

"What does that mean?" he asked, with a note of sternness in his voice.

"It means that I must tell someone," Calladine burst out in quivering tones. "That I don't know what to do. I am in a difficulty too big for me. That's the truth."

Hanaud looked at the young man keenly. It seemed to Ricardo that he took in every excited gesture, every twitching feature, in one comprehensive glance. Then he said in a friendlier voice:

"Sit down and tell me"--and he himself drew up a chair to the table.

"I was at the Semiramis last night," said Calladine, naming one of the great hotels upon the Embankment. "There was a fancy-dress ball."

All this happened, by the way, in those far-off days before the war--nearly, in fact, three years ago today--when London, flinging aside its reticence, its shy self-consciousness, had become a city of carnivals and masquerades, rivalling its neighbours on the Continent in the spirit of its gaiety, and exceeding them by its stupendous luxury. "I went by the merest chance. My rooms are in the Adelphi Terrace."

"There!" cried Mr. Ricardo in surprise, and Hanaud lifted a hand to check his interruptions.

"Yes," continued Calladine. "The night was warm, the music floated through my open windows and stirred old memories. I happened to have a ticket. I went."

Calladine drew up a chair opposite to Hanaud and, seating himself, told, with many nervous starts and in troubled tones, a story which, to Mr. Ricardo's thinking, was as fabulous as any out of the "Arabian Nights."

"I had a ticket," he began, "but no domino. I was consequently stopped by an attendant in the lounge at the top of the staircase leading down to the ballroom.

"'You can hire a domino in the cloakroom, Mr. Calladine,' he said to me. I had already begun to regret the impulse which had brought me, and I welcomed the excuse with which the absence of a costume provided me. I was, indeed, turning back to the door, when a girl who had at that moment run down from the stairs of the hotel into the lounge, cried gaily: 'That's not necessary'; and at the same moment she flung to me a long scarlet cloak which she had been wearing over her own dress. She was young, fair, rather tall, slim, and very pretty; her hair was drawn back from her face with a ribbon, and rippled down her shoulders in heavy curls; and she was dressed in a satin coat and knee-breeches of pale green and gold, with a white waistcoat and silk stockings and scarlet heels to her satin shoes. She was as straight-limbed as a boy, and exquisite like a figure in Dresden china. I caught the cloak and turned to thank her. But she did not wait. With a laugh she ran down the stairs a supple and shining figure, and was lost in the throng at the doorway of the ballroom. I was stirred by the prospect of an adventure. I ran down after her. She was standing just inside the room alone, and she was gazing at the scene with parted lips and dancing eyes. She laughed again as she saw the cloak about my shoulders, a delicious gurgle of amusement, and I said to her:

"'May I dance with you?'