reason why this man Uyenishi should have returned up Brownlow Street into what must have been the danger zone. I think that is a material question.”
“Then,” said Brodribb, with evident eagerness, “let us all walk up and have a look at the confounded place. It is quite close by.”
We all agreed instantly, two of us, at least, being on the tiptoe of expectation. For Thorndyke, who habitually understated his results, had virtually admitted that the casket had told him something; and as we walked up the Square to the gate in Lincoln’s Inn Fields, I watched him furtively, trying to gather from his im passive face a hint as to what the something amounted to, and wondering how the movements of the fugitive bore on the solution of the mystery. Brodribb was similarly occupied, and as we crossed from Great Turnstile and took our way up Brownlow Street, I could see that his excitement was approaching bursting-point.
At the top of the street Thorndyke paused and looked up and down the rather dismal thoroughfare which forms a continuation of Bedford Row and bears its name. Then he crossed to the paved island surrounding the pump which stands in the middle of the road, and from thence surveyed the entrances to Brownlow Street and Hand Court; and then he turned and looked thoughtfully at the pump.
“A quaint old survivor, this,” he remarked, tapping the iron shell with his knuckles. “There is a similar one, you may remember, in Queen Square, and another at Aldgate. But that is still in use.”
“Yes,” Brodribb assented, almost dancing with im patience and inwardly damning the pump, as I could see, “I’ve noticed it.”
I suppose,” Thorndyke proceeded, in a reflective tone, “they had to remove the handle. But it was rather a pity.”
“Perhaps it was,” growled Brodribb, whose complexion was rapidly developing affinities to that of a pickled cabbage, “but what the d—”
Here he broke off short and glared silently at Thorndyke, who had raised his arm and squeezed his hand into the opening once occupied by the handle. He groped in the interior with an expression of placid interest, and presently reported: “The barrel is still there, and so, apparently, is the plunger “—(Here I heard Brodribb mutter huskily, “Damn the barrel and the plunger too!”) “but my hand is rather large for the exploration. Would you, Miss Bonney, mind slipping your hand in and telling me if I am right?”
We all gazed at Thorndyke in dismay, but in a moment Miss Bonney recovered from her astonishment, and with a deprecating smile, half shy, half amused, she slipped off her glove, and reaching up—it was rather high for her—inserted her hand into the narrow slit. Brodribb glared at her and gobbled like a turkey-cock, and I watched her with a sudden suspicion that something was going to happen. Nor was I mistaken. For, as I looked, the shy, puzzled smile faded from her face and was succeeded by an expression of incredulous astonishment. Slowly she withdrew her hand, and as it came out of the slit it dragged something after it. I started forward, and by the light of the lamp above the pump I could see that the object was a leather bag secured by a string from which hung a broken seal.
“It can’t be!” she gasped as, with trembling fingers, she untied the string. Then, as she peered into the open mouth, she uttered a little cry. “It is! It is! It is the necklace!”
Brodribb was speechless with amazement. So was I; and I was still gazing open-mouthed at the bag in Miss Bonney’s hands when I felt Thorndyke touch my arm. I turned quickly and found him offering me an automatic pistol. “Stand by, Jervis,” he said quietly, looking towards Gray’s Inn.
I looked in the same direction, and then perceived three men stealing round the corner from Jockey’ Fields. Brodribb saw them, too, and snatching the bag of pearls from his client’s hands, buttoned it into his breast pocket and placed himself before its owner, grasping his stick with a war-like air. The three men filed along the pavement until they were opposite us, when they turned simultaneously and bore down on the pump, each man, as I noticed, holding his right hand behind him. In a moment, Thorndyke’s hand, grasping a pistol, flew up—as did mine, also—and he called out sharply: “Stop! If any man moves a hand, I fire.”
The challenge brought them up short, evidently unprepared for this kind of reception. What would have happened next it is impossible to guess. But at this moment a police whistle sounded and two constables ran out from Hand Court. The whistle was instantly echoed from the direction of Warwick Court, whence two more constabulary figures appeared through the postern gate of Gray’s Inn. Our three attendants hesitated but for an instant. Then, with one accord, they turned tail and flew like the wind round into Jockey’s Fields, with the whole posse of constables close on their heels.
“Remarkable coincidence,” said Brodribb, “that those policemen should happen to be on the lookout. Or isn’t it a coincidence?”
“I telephoned to the station superintendent before I started,” replied Thorndyke, “warning him of a possible breach of the peace at this spot.”
Brodribb chuckled. “You’re a wonderful man, Thorndyke. You think of everything. I wonder if the police will catch those fellows.”
“It is no concern of ours,” replied Thorndyke. “We’ve got the pearls, and that finishes the business. There will be no more shadowing, in any case.”
Miss Bonney heaved a comfortable little sigh and glanced gratefully at Thorndyke. “You can have no idea what a relief that is!” she exclaimed; “to say nothing of the treasure-trove.”
We waited some time, but as neither the fugitives nor the constables reappeared, we presently made our way back down Brownlow Street. And there it was that Brodribb had an inspiration.
“I’ll tell you what,” said be. “I will just pop these things in my strong-room—they will be perfectly safe there until the bank opens tomorrow—and then we’ll go and have a nice little dinner. I’ll pay the piper.”
“Indeed you won’t!” exclaimed Miss Bonney. “This is my thanksgiving festival, and the benevolent wizard shall be the guest of the evening.”
“Very well, my dear,” agreed Brodribb. “I will pay and charge it to the estate. But I stipulate that the benevolent wizard shall tell us exactly what the oracle said. That is essential to the preservation of my sanity.”
“You shall have his ipissima verba,” Thorndyke promised; and the resolution was carried, nem. con.
An hour and a half later we were seated around a table in a private room of a café to which Mr. Brodribb had conducted us. I may not divulge its whereabouts, though I may, perhaps, hint that we approached it by way of Wardour Street. At any rate, we had dined, even to the fulfilment of Brodribb’s ideal, and coffee and liqueurs furnished a sort of gastronomic doxology. Brodribb had lighted a cigar and Thorndyke had produced a vicious-looking little black cheroot, which he regarded fondly and then returned to its abiding-place as unsuited to the present company.
“Now,” said Brodribb, watching Thorndyke fill his pipe (as understudy of the cheroot aforesaid), “we are waiting to hear the words of the oracle.”
“You shall hear them,” Thorndyke replied. “There were only five of them. But first, there are certain introductory matters to be disposed of. The solution of this problem is based on two well-known physical facts, one metallurgical and the other optical.”
“Ha!” said Brodribb. “But you must temper the wind to the shorn lamb, you know, Thorndyke. Miss Bonney and I are not scientists.”
“I will put the matter
