Frank heard him go. “All idle bluff,” he said to himself. “The scoundrel! He must have taken me for an idiot, I think. I’ve had enough of this, and shall clear out, bag and baggage, to-day. Things are getting too unpleasant.”

He jumped up, poured the water into his bath, and began his ablutions.

Meanwhile, Otto Staarbrucker, raging with anger and malice, was striding along the shady side of the street, straight for the chief detective’s house. Despite his tinge of Jewish blood, there was in his system a strong touch of the wild ungovernable temper, not seldom found in the Teutonic race. It was not long before he had reached the detective’s house, and announced himself. Carefully subduing, as far as possible, the outward manifestation of his malicious wrath, he informed the acute official, to whom he was, at his own request, shown, that his lodger, Mr Farnborough, was in possession of a valuable unregistered diamond, which he stated he had found in a stuffed crocodile’s interior, or some equally improbable place. That to his own knowledge the stone had been unregistered for some days, although he had repeatedly urged Farnborough to declare it; that the whole surroundings of the case were, to his mind, very suspicious; and, finally, that, as he could not take the responsibility of such a position of affairs under his roof, he had come down to report the matter.

The detective pricked up his ears at the story, reflected for a few moments, and then said: “I suppose there is no mistake about this business, Mr Staarbrucker. It is, as you know, a very serious matter, and may mean the ‘Breakwater.’ Mr Farnborough has a good position in De Beers, and some strong friends, and it seems rather incredible (although we’re never surprised at anything, where diamonds are in question) that he should have got himself into such a mess as you tell me.”

“I am quite certain of what I tell you,” replied Staarbrucker. “If you go up to my house now, you’ll find Farnborough in his bedroom, and the stone’s somewhere on him, or in his room. Don’t lose time.”

“Well,” responded the detective, “I’ll see to the matter at once. So long, Mr Staarbrucker!”

Mr Flecknoe, the shrewdest and most active diamond official in Kimberley, as was his wont, lost not an instant. He nosed the tainted gale of a quarry. In this case he was a little uncertain, it is true; but yet there was the tell-tale taint, the true diamond taint, and it must at once be followed. Mr Flecknoe ran very mute upon a trail, and in a few minutes he was at Staarbrucker’s bungalow. Staarbrucker himself had, wisely perhaps, gone down to his store, there to await events. Vitriolic anger still ran hotly within him. He cared for nothing in the world, and was perfectly reckless, provided only that Frank Farnborough were involved in ruin, absolute and utter.

Mr Flecknoe knocked, as a matter of form, in a pleasant, friendly way at the open door of the cottage, and then walked straight in. He seemed to know his way very completely—there were few things in Kimberley that he did not know—and he went straight to Frank’s bedroom, knocked again and entered. Frank was by this time out of his bath, and in the act of shaving. It cannot be denied that the detective’s appearance, so soon after Staarbrucker’s threat, rather staggered him, and he paled perceptibly. The meshes of the I.D.B. nets are terribly entangling, as Frank knew only too well, and I.D.B. laws are no matters for light jesting. Mr Flecknoe noted the change of colour.

(I.D.B., Illicit Diamond Buying, a highly criminal offence in South Africa.)

“Well, Mr Flecknoe,” said the younger man, as cheerily as he could muster, for he knew the detective very well, “what can I do for you?”