At the end of an hour, when the two detectives stood robed in their strange Indian attire, one would readily have declared that four genuine Hindoos, rather than two, occupied the apartment.

Having thus paved the way to his next move, Nick easily prevailed upon the Hindoos to remain indoors for a day or two, lest the deception should be discovered and his designs perverted.

He and Chick then returned to their waiting carriage, and half an hour later it drew up at the Fifth Avenue store of Venner & Co.

Chick alighted and led the way in.

In order that he might do most of the talking, and shape his course by whatever might occur, Nick had decided to personate the interpreter.

Yet both detectives had carefully noticed the peculiar characteristics of the Hindoo tongue, and believed that they could imitate it so cleverly as to prevent detection.

Several facts, which Nick then had no way of knowing, however, operated very quickly to betray him and the crafty ruse he had adopted, when Venner personally met them at the store door.

First, Kilgore had shrewdly reasoned that Nick's first move, after the disclosures made by Pylotte, would be that of thus getting positive evidence against Venner; and the crafty diamond swindler had warned Venner to be on the watch for the detective, and to handle him in a way to serve their own designs.

Furthermore, when visiting the theater with Cervera, Venner frequently had heard Pandu Singe talking with his interpreter; and before Nick fairly had begun speaking, Venner penetrated his disguise and saw that he was up against the two detectives.

Yet, despite the unexpected characters in which he now beheld them, the nerve of the polished knave did not weaken, nor his countenance in any way betray him. He at once proceeded to follow Kilgore's instructions.

"Ah! yes, I recognize both you and your interpreter," said he, in reply to Nick's dignified greeting. "I have frequently seen Pandu Singe at the theater, where I am admitted to the stage with Senora Cervera, the famous Spanish dancer. Perhaps Pandu Singe may have seen me there."

Nick gravely bowed, then pretended to interpret the remarks to Chick; who immediately began to bow and smile, at the same time glibly responding in a jargon that would have staggered a Chinese laundryman, yet which sounded as much like Hindoo as anything.

Had his own situation been less serious, and the entire outlook less desperate, Venner would have laughed at the consummate dignity and soberness with which the two detectives co-operated in their exchange of unintelligible talk.

"My employer, the great Pandu Singe," bowed Nick, "says he remembers the friend of the great Cervera."

"Ah! I am glad to hear it," cried Venner, shaking hands with Chick.

"He has seen the splendid diamonds of the great senora, and has heard that they came from your magnificent store," Nick then went on to explain.

"That is quite right," bowed Venner. "Many of them did come from here.

Is Pandu Singe looking for some diamonds?"

Nick promptly bowed, and noted a gleam of satisfaction in the depths of Venner's eyes.

"The great Pandu Singe soon returns to his own country," replied Nick.

"He wishes to take with him, as a gift to her august excellency, the Empress of all the Indies, six fine jewels of equal weight and value. He calls here to learn if you can provide him with them."

Venner plainly saw the game that was being attempted, and it suited him to the very letter.

"Does the great Pandu Singe wish to purchase diamonds?" he asked, bowing.

"Diamonds, yes! Are they not for the empress?"

"I should have thought of that, certainly."

"Only diamonds will answer."

"Of large size and the first water?"

"The great Pandu Singe would consider no other."

"Alas, then, this is most unfortunate!" Venner now exclaimed, glancing about the store. "You see that we are making some repairs here, in the walls of our store and vault."

"That is plain," bowed Nick. "But what has that to do with the diamonds?"

"Only this," replied Venner, with feigned regret. "During these repairs I have removed all of my most valuable diamonds to a vault in my private residence."

"For safer keeping?"

"Exactly."

"I will explain to Pandu Singe."

"Wait a moment," Venner quickly interposed. "Tell him, also, that I have at my residence the very gems he desires, six magnificent diamonds, precisely alike in weight, purity and cutting. They cannot be equaled in New York City, if in the entire country."

"Are they fit for an empress?"

"They are fit for a G.o.ddess."

"Ah! that will please Pandu Singe."

"Tell him, also, that he can purchase them at a marvelously low price,"

cried Venner. "Now, if Pandu Singe will come to my house, say early this evening, he may see the diamonds and examine them at his leisure. Tell him that, Mr. Interpreter, and say that I will send my carriage for him immediately after dinner. Say, too, that he may then see the diamonds both by daylight and lamplight, and so observe all the variety of their magnificent fire. Really, this will be greatly to the advantage of Pandu Singe."

Nick gravely heard him to a finish, and with never a change of countenance.

Yet, like a flash, one of those marvelous intuitions characteristic of this great detective, Nick Carter had suddenly grasped the whole truth.

That conflict of the previous night, the flight of three of the diamond gang, Pylotte left comparatively uninjured in the road, his subsequent disclosures, his extensive knowledge of the diamond-making art, the hints he had imparted, and now this manifest eagerness of Venner to lure his ostensible customers to his suburban house--all combined to reveal to Nick's keen mind the shrewd game by which Kilgore was hoping to entrap him.

Nick now knew that Venner recognized both Chick and himself, and was serving only the Kilgore gang.

Yet Nick bowed without the slightest self-betrayal, and said, gravely:

"I will explain the situation to Pandu Singe."

For several minutes the two detectives maintained their curious game of talk.

Then Nick, who had speedily planned his own counter-move, again turned to Rufus Venner.

"The great Pandu Singe will do what you suggest," said he. "He wishes to see the diamonds, and will be pleased to come to your house."

Venner had felt sure of this to start with, though he little dreamed that Nick had guessed the truth, and knew that he was recognized.

"Let it be to-day, then," said he, quickly.

"At your own pleasure," bowed Nick.