The Prince took the letter and glanced it through by the light of the street lamp. It was highly apologetic, but requested him to follow the bearer to the Prefecture without delay.

“In short,” said Florizel, “I am arrested.”

“Your Highness,” replied the officer, “nothing, I am certain, could be further from the intention of the Prefect. You will observe that he has not granted a warrant. It is mere formality, or call it, if you prefer, an obligation that your Highness lays on the authorities.”

“At the same time,” asked the Prince, “if I were to refuse to follow you?”

“I will not conceal from your Highness that a considerable discretion has been granted me,” replied the detective with a bow.

“Upon my word,” cried Florizel, “your effrontery astounds me! Yourself, as an agent, I must pardon; but your superiors shall dearly smart for their misconduct. What, have you any idea, is the cause of this impolitic and unconstitutional act? You will observe that I have as yet neither refused nor consented, and much may depend on your prompt and ingenuous answer. Let me remind you, officer, that this is an affair of some gravity.”

“Your Highness,” said the detective humbly, “General Vandeleur and his brother have had the incredible presumption to accuse you of theft. The famous diamond, they declare, is in your hands. A word from you in denial will most amply satisfy the Prefect; nay, I go farther: if your Highness would so far honour a subaltern as to declare his ignorance of the matter even to myself, I should ask permission to retire upon the spot.”

Florizel, up to the last moment, had regarded his adventure in the light of a trifle, only serious upon international considerations. At the name of Vandeleur the horrible truth broke upon him in a moment; he was not only arrested, but he was guilty. This was not only an annoying incident—it was a peril to his honour. What was he to say? What was he to do? The Rajah’s Diamond was indeed an accursed stone; and it seemed as if he were to be the last victim to its influence.

One thing was certain. He could not give the required assurance to the detective. He must gain time.

His hesitation had not lasted a second.