Mr. Vandeleur looked up; his face contracted with the blackest and most deadly passion; his eyes opened widely, and his under jaw dropped in an astonishment that was upon the brink of fury. By an instinctive movement he had covered the hat-box with the coat. For half a minute the two men stared upon each other in silence. It was not a long interval, but it sufficed for Mr. Rolles; he was one of those who think swiftly on dangerous occasions; he decided on a course of action of a singularly daring nature; and although he felt he was setting his life upon the hazard, he was the first to break silence.

“I beg your pardon,” said he.

The Dictator shivered slightly, and when he spoke his voice was hoarse.

“What do you want here?” he asked.

“I take a particular interest in diamonds,” replied Mr. Rolles, with an air of perfect self-possession. “Two connoisseurs should be acquainted. I have here a trifle of my own which may perhaps serve for an introduction.”

And so saying, he quietly took the case from his pocket, showed the Rajah’s Diamond to the Dictator for an instant, and replaced it in security.

“It was once your brother’s,” he added.

John Vandeleur continued to regard him with a look of almost painful amazement; but he neither spoke nor moved.

“I was pleased to observe,” resumed the young man, “that we have gems from the same collection.”

The Dictator’s surprise overpowered him.