"Keep an eye out for developments," said the Prince, seeing that the other hesitated for a word, "and to watch for an opportunity of forcing England's hand."

"Precisely, Your Highness; and my superiors did me the honour of selecting me for this delicate task."

"A wise choice, I do not doubt," said the Prince, gravely. That Tellier had any important revelation to make he did not in the least believe; but there seemed a chance of extracting some amusement from the situation—and time was hanging heavily on his hands—would hang heavily until the hour of the promenade to-morrow.

"I hope to prove it so, Your Highness!" cried the detective, flushing with pleasure at the compliment. "In fact, I think that I may say I have already proved it so!"

"Ah!" said the Prince, and lighted another cigarette.

"I arrived soon after Your Highness; I took a wagon from Zunderburg, rather than lose precious time by waiting for the train of this afternoon. I was very weary, for the journey from Paris is a trying one; but before seeking repose, indeed without even permitting myself to think of my own fatigue, I ascertained that Lord Vernon occupied apartment A de luxe, and Your Highness apartment B de luxe, in this hotel."

"Indeed!" said the Prince.

"I naturally took care at once to secure a room here, since it was of the first importance that I should be in a position to see everything that might occur."

"Naturally," agreed the Prince.

"Though it was very difficult, since every room was taken. For another man, it would have been impossible."