“Has he not returned to Dantzig?” was the ready answer. “He should have been there a week ago. We parted at Vilna. He was exhausted—a mere question of over-fatigue—and at his request I left him there to recover and to pursue his way to Dantzig, where he knew you would be awaiting him.”

He paused and looked from one to the other with quick and furtive eyes. He felt himself easily a match for them in quickness of perception, in rapid thought, in glib speech. Both were dumb—he could not guess why. But there was a steadiness in D'Arragon's eyes which rarely goes with dulness of wit. This was a man who could be quick at will—a man to be reckoned with.

“You are wondering why I travel under your cousin's name, Monsieur,” said De Casimir, with a friendly smile.

“Yes,” returned Louis, without returning the smile.

“It is simple enough,” explained the sick man. “At Vilna we found all discipline relaxed. There were no longer any regiments. There was no longer staff. There was no longer an army. Every man did as he thought best. Many, as you know, elected to await the Russians at Vilna, rather than attempt to journey farther. Your cousin had been given the command of the escort which has now filtered away, like every other corps. He was to conduct back to Paris two carriages laden with imperial treasure and certain papers of value. Charles did not want to go back to Paris. He wished most naturally to return to Dantzig. I, on the other hand, desired to go to France; and there place my sword once more at the Emperor's service. What more simple than to change places?”

“And names,” suggested D'Arragon, without falling into De Casimir's easy and friendly manner.

“For greater security in passing through Poland and across the frontier,” explained De Casimir readily. “Once in France—and I hope to be there in a week—I shall report the matter to the Emperor as it really happened: namely, that, owing to Colonel Darragon's illness, he transferred his task to me at Vilna. The Emperor will be indifferent, so long as the order has been carried out.”

De Casimir turned to Desiree as likely to be more responsive than this dark-eyed stranger, who listened with so disconcerting a lack of comment or sympathy.

“So you see, madame,” he said, “Charles will still get the credit for having carried out his most difficult task, and no harm is done.”

“When did you leave Charles at Vilna?” asked she.