“You remember that when he was ‘a diamond salesman,’ on board the Aztec that we hardly ever saw him?—well, there was a reason, as the advertising men say. What was that reason? you ask me. Just this; that he didn’t want any one to get wise that he was minus three of his precious digits.

“Why for?—Because the man who killed Dr. Moneague in New York, was shy on his hands in the same way—now do you see!” triumphantly demanded the reporter.

“If our amiable friend Rogero isn’t the same man who murdered Moneague in New York I’ll eat my camera, films and all,” he concluded.

“It doesn’t seem to me that you have any proof on which you can base such a serious accusation,” said Mr. Chester. “Rogero is a desperate man and an unscrupulous one, but I do not believe that even he would deliberately commit such a crime.”

“Don’t you, sir?” contradicted Billy, “well, I do. From what I’ve observed of him, he’d stop at nothing if he had an end to gain. The thing in this case though is, what was his motive for killing Dr. Moneague, except that Moneague, so the police discovered, was an agent of the revolutionists down here?”

Like a flash the recollection of what Don Pachecho had told him about the bit of parchment on which was traced the secret of the lost Toltec mines crossed Mr. Chester’s mind. He hurriedly gave his interested auditors an outline of what he knew about the clue to the treasure trove.

“Rogero’s the man then for twenty dollars!” excitedly cried Billy. “He had the thing in that black bag he guarded so carefully. If I only could get hold of it we’d have his neck in the halter in a brace of shakes. I’ve a good mind to try. The first thing I’m going to do, though, is to flash a bit of message to New York—to No. 300 Mulberry Street—and tell my old friend Detective Lieutenant Connolly that I think a run down here would result in his turning up something interesting. Anyhow——,” the reporter was continuing, when he was cut short by the sound of a shot from outside and a loud cry of pain. The startled party hurried through the sala and out into the street.

“A shot means a story;” remarked Billy to his camera as he adjusted it ready for action while he hurried along after the others.

CHAPTER V.

ROGERO IS CHECKMATED.