At noon Shuttleworth, calm and pleasant, came across the lawn with outstretched hand. He uttered low words of encouragement and comfort. He said that poor Mrs. Dixon had passed away, and later on he left to attend to his work in the parish. After luncheon, served by the silent Felix, Poland retired to his study with the newspaper, and sat for two hours, staring straight before him, until, just after four o’clock, the door was suddenly flung open, and a slim, athletic young girl, with a wealth of soft fair hair, a perfect countenance, a sweet, lovable expression, and a pair of merry blue eyes, burst into the room, crying —

“Hallo, dad! Here I am – so glad to be back again with you!” And, bending over him, she gave him a sounding kiss upon the cheek.

She was verily a picture of youthful beauty, in her cool, pale grey gown, her hair dressed low, and secured by a bow of black velvet, while her big black hat suited her to perfection, her blue eyes adoring in their gaze and her lovely face flushed with pleasure at her home-coming.

Her father took her hand, and, gazing lovingly into her eyes, said in a slow voice —

“And I, too, darling, am glad to have you at home. Life here is very dull indeed without you.”

That night, when seated together in the pretty old-fashioned drawing-room before retiring to bed – a room of bright chintzes, costly knick-knacks, and big blue bowls of sweet-smelling pot-pourri – Sonia looked delightful in her black net dinner-gown, cut slightly décolleté, and wearing around her slim white throat a simple necklace of pale pink coral.

“My dear,” exclaimed her father in a slow, hesitating way, after her fingers had been running idly over the keys of the piano, “I want to speak very seriously to you for a few moments.”

She rose in surprise, and came beside his chair. He grasped her soft hand, and she sank upon her knees, as she so often did when they spoke in confidence.

“Well – I’ve been wondering, child, what – what you will do in future,” he said, with a catch in his voice. “Perhaps – perhaps I may have to go away for a very, very long time – years perhaps – on a long journey, and I shall, I fear, be compelled to leave you, to – ”

“To leave me, dad!” gasped the girl, dismayed. “No – surely – you won’t do that? What could I do without you – without my dear, devoted dad – my only friend!”

“You will have to – to do without me, dearest – to – to forget your father,” said the white-faced man in a low, broken voice. “I couldn’t take you with me. It would be impossible.”

The girl was silent; her slim hand was clutching his convulsively; her eyes filled with the light of unshed tears.

“But what should I do, dad, without you?” she cried. “Why do you speak so strangely? Why do you hide so many things from me still – about our past? I’m eighteen now, remember, dad, and you really ought to speak to me as a woman – not as a child. Why all this mystery?”

“Because – because it is imperative, Sonia,” he replied in a tone quite unusual. “I – I would tell you all, only – only you would think ill of me. So I prefer that you, my daughter, should remain in ignorance, and still love me – still – ”

His words were interrupted by Felix, who opened the door, and, advancing with silent tread, said —

“A gentleman wishes to speak with m’sieur on very urgent business. You are unacquainted with him, he says. His name is Max Morel, and he must see you at once. He is in the hall.”

Poland’s face went a trifle paler. Whom could the stranger be? Why did he desire an interview at that hour? – for it was already eleven o’clock.

“Sonia dear,” he said quietly, turning to his daughter, “will you leave me for a few moments? I must see what this gentleman wants.”

The girl followed Felix out somewhat reluctantly, when, a few seconds later, a short, middle-aged Frenchman, with pointed grey beard and wearing gold pince-nez, was ushered in.

Philip Poland started and instantly went pale at sight of his visitor.

“I need no introduction, m’sieur. You recognize me, I see,” remarked the stranger, in French.

“Yes,” was the other’s reply. “You are Henri Guertin, chief inspector of the sûreté of Paris. We have met before – once.”

“And you are no doubt aware of the reason of my visit?”

“I can guess,” replied the unhappy man. “You are here to arrest me – I know. I – ”

The renowned detective – one of the greatest criminal investigators in Europe – glanced quickly at the closed door, and, dropping his voice, said —

“I am here, not to arrest you, M’sieur Poland – but to afford you an opportunity of escape.”

“Of escape!” gasped the other, his drawn countenance blanched to the lips.

“Yes, escape. Listen. My instructions are to afford you an easy opportunity of – well, of escaping the ignominy of arrest, exposure, trial, and penalty, by a very simple means – death by your own hand.”

“Suicide!” echoed Poland, after a painful pause. “Ah! I quite understand! The Government are not anxious that the scandal should be made public, eh?” he cried bitterly.

“I have merely told you my instructions,” was the detective’s response, as, with a quick, foreign gesture, he displayed on his left hand a curious old engraved amethyst set in a ring – probably an episcopal ring of ages long ago. “At midnight I have an appointment at the cross-roads, half-a-mile away, with Inspector Watts of Scotland Yard, who holds a warrant for your arrest and extradition to France. If you are still alive when we call, then you must stand your trial – that is all. Trial will mean exposure, and – ”

“And my exposure will mean the downfall and ruin of those political thieves now in power – eh?” cried Poland. “They are not at all anxious that I should fall into the hands of the police.”

“And you are equally anxious that the world – and more especially your daughter – shall not know the truth,” remarked the detective, speaking in a meaning tone. “I have given you the alternative, and I shall now leave. At midnight I shall return – officially – when I hope you will have escaped by the loophole so generously allowed you by the authorities.”

“If I fled, would you follow?”

“Most certainly. It would be my duty. You cannot escape – only by death. I regret, m’sieur, that I have been compelled to put the alternative so bluntly, but you know full well the great issues at stake in this affair. Therefore I need say nothing further, except to bid you au revoir– till midnight.”

Then the portly man bowed – bowed as politely as though he were in the presence of a crowned head – and, turning upon his heel, left the room, followed by his host, who personally opened the door for him as he bade him good-night.

One hour’s grace had been given Philip Poland. After that, the blackness of death.

His blanched features were rigid as he stood staring straight before him. His enemy had betrayed him. His defiance had, alas! cost him his life.

He recollected Shuttleworth’s slowly uttered words on the night before, and his finger-nails clenched themselves into his palms. Then he passed across the square, old-fashioned hall to the study, dim-lit, save for the zone of light around the green-shaded reading-lamp; the sombre room where the old grandfather clock ticked so solemnly in the corner.

Sonia had returned to the drawing-room as he let his visitor out. He could hear her playing, and singing in her sweet contralto a tuneful French love-song, ignorant of the hideous crisis that had fallen, ignorant of the awful disaster which had overwhelmed him.

Three-quarters of an hour had passed when, stealthily on tiptoe, the girl crept into the room, and there found her father seated by the fireplace, staring in blank silence.

The long old brass-faced clock in the shadow struck three times upon its strident bell. Only fifteen minutes more, and then the police would enter and charge him with that foul crime. Then the solution of a remarkable mystery which had puzzled the whole world would be complete.

He started, and, glancing around, realized that Sonia, with her soft hand in his, was again at his side.

“Why, dad,” cried the girl in alarm, “how pale you are! Whatever ails you? What can I get you?”

“Nothing, child, nothing,” was the desperate man’s hoarse response. “I’m – I’m quite well – only a little upset at some bad news I’ve had, that’s all. But come. Let me kiss you, dear. It’s time you were in bed.”

And he drew her down until he could print a last fond caress upon her white open brow.

“But, dad,” exclaimed the girl anxiously, “I really can’t leave you. You’re not well. You’re not yourself to-night.”

As she uttered those words, Felix entered the room, saying in an agitated voice —

“May I speak with you alone, m’sieur?”

His master started violently, and, rising, went forth into the hall, where the butler, his face scared and white, whispered —

“Something terrible has occurred, m’sieur! Davis, the groom, has just found a gentleman lying dead in the drive outside. He’s been murdered, m’sieur!”

“Murdered!” gasped Poland breathlessly. “Who is he?”

“The gentleman who called upon you three-quarters of an hour ago. He’s lying dead – out yonder.”

“Where’s a lantern? Let me go and see!” cried Poland. And a few moments later master and man were standing with the groom beside the lifeless body of Henri Guertin, the great detective, the terror of all French criminals. The white countenance, with its open, staring eyes, bore a horrified expression, but the only wound that could be distinguished was a deep cut across the palm of the right hand, a clean cut, evidently inflicted by a keen-edged knife.

Davis, on his way in, had, he explained, stumbled across the body in the darkness, ten minutes before.

Philip Poland had knelt, his hand upon the dead man’s heart, when suddenly all three were startled by the sound of footsteps upon the gravel, and next moment two men loomed up into the uncertain light of the lantern.

One was tall and middle-aged, in dark tweeds and a brown hat of soft felt; the other, short and stout, wearing gold pince-nez.

A loud cry of dismay broke from Poland’s fevered lips as his eyes fell upon the latter.

“Hallo! What’s this?” cried a sharp, imperious voice in French, the voice of the man in pince-nez, as, next moment, he stood gazing down upon the dead unknown, who, strangely enough, resembled him in countenance, in dress – indeed, in every particular.

The startled men halted for a moment, speechless. The situation was staggering.

Henri Guertin stood there alive, and as he bent over the prostrate body an astounding truth became instantly revealed: the dead man had been cleverly made-up to resemble the world-renowned police official.

The reason of this was an entire mystery, although one fact became plain: he had, through posing as Guertin, been foully and swiftly assassinated.

Who was he? Was he really the man who came there to suggest suicide in preference to arrest, or had that strange suggestion been conveyed by Guertin himself?

The point was next moment decided.

“You see, m’sieur,” exclaimed Poland defiantly, turning to the great detective, “I have preferred to take my trial – to allow the public the satisfaction of a solution of the problem, rather than accept the generous terms you offered me an hour ago.”

“Terms I offered you!” cried the Frenchman. “What are you saying? I was not here an hour ago. If you have had a visitor, it must have been this impostor – this man who has lost his life because he has impersonated me!”

Philip Poland, without replying, snatched at the detective’s left hand and examined it. There was no ring upon it.

Swiftly he bent beside the victim, and there, sure enough, upon the dead white finger was revealed the curious ring he had noticed – an oval amethyst engraved with a coat-of-arms surmounted by a cardinal’s hat – the ring worn by the man who had called upon him an hour before!