"My companion said it was because the Blue Masque chose you."

"She was very charming," said I. "Who was she?"

"I knew neither his nor mine," said he evasively.

"But mine?" I insisted. "She of the sweet voice--which, Colonel, I observed, you noted."

He hesitated an instant; then answered:

"Mademoiselle d'Essolde."

"Indeed!" I exclaimed. If rumor spoke truly, Mademoiselle d'Essolde carried Moore's heart in her keeping. Then I laughed. "Never mind, Colonel, we shall see her at supper, presently--she will be beside you, I think."

"Your Highness is very thoughtful," he said.

"Don't give me the credit--it was Lady Vierle's idea," I answered--and changed the subject. "What is Lotzen up to now," I asked.

"Some deviltry--either women or you."

"I think it's both," said I. "The Marquise consulted him as to sending Mrs. Spencer an invitation, and you remember how careful he was to call in person to regret he could not come to-night. He saw, at once, his opportunity for a talk with Mrs. Spencer. Depend on it, that is the explanation of the White Twins, and of Lotzen's evading identification.

I dare say he already has an alibi perfected.

"He has had no chance to see her, yet," said Moore. "I'll have her ordered to her hotel."

"No, she must remain," said I; "I'm committed to the Marquise.

Besides, I'm minded to play their own game for them, a bit. Do you think Lotzen knows I'm at the Masque?"

Moore thought a moment. "Lady Vierle told him you were not coming, when she asked as to Mrs. Spencer," he said. "And he may have let it go at that; but it wouldn't be his usual method. My last order, before we left the Epsau, was that you were indisposed and had retired and, on no account, were you to be disturbed without Bernheim's express permission. But, servants are purchasable and spies are plenty, and Lotzen knows how to reach the first and use the second. On the whole, it is likely he has been advised that you are here, though he may not know your costume. The long military cloaks completely hid our dress; and you will recall that, at my suggestion, we concealed our hats under them until we were in the carriage."

"I can't get used to this espionage," I said. "Suppose we take a look around for the Gypsy Lady; doubtless, we shall find her with a White Masque."

We were on a walk bordered by a hedge of boxwood, shoulder high. On the other side, was another path with several Masques on it. Suddenly, one of them, as he pa.s.sed, reached over the hedge and struck me in the back with a dagger.

The blow sent me plunging forward, but did me no hurt. I owed my life to Bernheim. His steel vest had stayed the blade that, otherwise, would have found my heart.

With a cry, Moore sprang to me and caught me in his arms.

"I'm not hurt," I said, recovering my balance.

"Thank G.o.d!" he e.j.a.c.u.l.a.t.ed--then took the hedge at a vault.

I caught him by the arm as he landed on the other side.

"Stay," I commanded. "Let the fellow go."

Moore looked at me a moment. "Let him go?" he exclaimed incredulously.

I nodded. "And come along--let us get away from here."

Without a word, he vaulted back and we moved off.

The whole thing had occurred so unexpectedly and so swiftly that the few Masques, who had been in the vicinity, evidently had not noticed the murderous nature of the a.s.sault; and the peculiar arrangement of the hedges and trees had enabled my a.s.sailant to disappear almost instantly. Indeed, but for Moore's vaulting the boxwood after him, it is likely no one would have suspected anything unusual.

Several men came up and inquired if they could be of any a.s.sistance, but I a.s.sured them it was a matter of no consequence--that I had, evidently, been mistaken for another--or it was only a bit of pleasantry from some friend who had recognized me.

"But that you are uninjured," remarked one, "I should almost say it was a case of attempted a.s.sa.s.sination."

I laughed. "An a.s.sa.s.sination would fit in well with the costumes and the garden--everything is mediaeval to-night."

"Except the electric lights," Moore threw in, dryly; and we bowed ourselves away.

"I suppose we may now a.s.sume that somebody knows my disguise," I observed. "Did you see my friend with the dagger?"

"Yes--as much of him as there was to see--he wore a long black cloak and was rather above medium size. If Your Highness had not stopped me I might have caught him."

"That's just why I stopped you," said I. "I didn't want to embarra.s.s the De Vierles. Think what it would mean to them to have it known that one of their guests had attempted to stab to death an Archduke."

"Hum--I don't see why that is more important than protecting your life."

"My dear Colonel," said I, "if it were a question between my life and Lady Vierle's temporary embarra.s.sment, I would look after my life. But my life is still safe, and in no more danger with that rogue at large than with him caught."

"It would be one less scoundrel for Lotzen to work with," Moore objected.

"I fancy he has got so many scoundrels on his pay roll that one, more or less, won't matter," I answered. "But, I've no objection to a quiet inquiry as to this a.s.sault--it may come very handy, some time--so, do you look up the Secret Service Officer, in charge here to-night, and give him such facts as you deem proper, and let a report be made to me in the morning."

"First, let me escort you to the house," he insisted.

I put my hand on his arm. "Lotzen may have his hired bravoes," I said, "but I'm blessed with two good friends in you and Bernheim."

The warm-hearted Irishman took my hand and pressed it.

"We both are Your Highness's servants until death," he said.

"I'm in no further danger to-night, I fancy," said I. "And here come Lady Helen and the American Amba.s.sador. I'll remain with them. When you have done your errand rejoin me."

XXII

BLACK KNAVE AND WHITE

There were three women and a man in the approaching party, and it chanced I knew them all. Courtney had a red rose fastened conspicuously on his breast, and Lady Helen wore a great bunch of them in her hair--another was gowned like her and, so, must be the Marquise de Vierle herself--the fourth was Mademoiselle d'Essolde.

"If you wish," said I, barring the path and sweeping the ground with my feather, "I'll hunt another rose. I've been searching for you so long that the one I began with has gone to pieces."

"Of course, Your Highness would never think of looking in the Ball Room," said Lady Helen.