“What!” he cried in a great disturbance, “the same as we met near the Trianon! O Lord! Paul, there is something wrong, for that was Buhot.”

“And this Buhot?” I asked.

“A police inspector. There is no time to lose. Monsieur Greig, I want you to do an office for me. Here is a letter that must find its way into the hands of the Prince. You will give it to him. You have seen that he passes the café at the same hour every day. Well, it is the easiest thing in the world for you to go up to him and hand him this. No more's to be done by you.”

“But why should I particularly give him the letter? Why not send it by the Swiss?”

“That is my affair,” cried the priest testily. “The Prince knows you—that is important. He knows the Swiss too, and that is why I have the Swiss with me as a second string to my bow, but I prefer that he should have this letter from the hand of M. Andrew Greig's nephew. 'Tis a letter from his Royal Highness's most intimate friend.”

I took the letter into my hand, and was amazed to see that the address was in a writing exactly corresponding to that of a billet now in the bosom of my coat!

What could Miss Walkinshaw and the Prince have of correspondence to be conducted on such roundabout lines? Still, if the letter was hers I must carry it!

“Very well,” I agreed, and went out to meet the Prince.

The sun was blazing; the street was full of the quality in their summer clothing. His Royal Highness came stepping along at the customary hour more gay than ever. I made bold to call myself to his attention with my hat in my hand. “I beg your Royal Highness's pardon,” I said in English, “but I have been instructed to convey this letter to you.”

He swept his glance over me; pausing longest of all on my red shoes, and took the letter from my hand. He gave a glance at the direction, reddened, and bit his lip.