The lieutenant brought a pile of documents to his superior's table and rapidly classified them.

His superior, Commandant Dumoulin, had been chief assistant at the Second Bureau. He had passed long years at his post there. Previous to that, he had acted as Government Commissioner on the Councils of War in the various garrisons where he had been stationed.... Some six months ago Dumoulin had sent in his request to the Minister of War for a change of billet. His record being an excellent one, the Minister had appointed him Government Chief-commissioner attached to the Principal Council of War, sitting in Paris.

Dumoulin had recently taken up his new duties, and was counting on getting peacefully into the run of things, when, the evening before, he had been warned at his own home by a private note from the Minister, that a deserter, accused of treason, had been arrested, and that Corporal Vinson was the man in question.

At the sight of this name Commandant Dumoulin thrilled with excitement. As former Under-Secretary at the Second Bureau he had the affair at his finger ends, and well knew how tangled, how obscure it was, how bristling with dangers, how rich in complications.... The Vinson affair, it was the Captain Brocq affair, the singer Nichoune affair ... the story of a plan of mobilisation stolen, of a gun piece lifted from the Arsenal!... He was in for a big affair—a sensational case!...

The commandant passed a wakeful night and arrived early at his office. He must get to work! Fortunately, among his deputies he had found a competent and zealous helper in Lieutenant Servin. He turned to him now.

"Our next proceeding will be to establish the identity of Corporal Vinson. We must examine him on that point without delay.... Send for him immediately, Lieutenant!... According to the prison register, he occupies cell 26."

"Excuse me, Commandant; Vinson, who was registered this morning at the Cherche-Midi prison, must actually be in the Council buildings, where he occupied cell 27."

The commandant adjusted his eye-glasses, looked closely at a yellow paper, and corrected in his turn:

"That is an error: in cell 27 is an individual named Butler."

"Yes, Commandant: Butler—he is Vinson!"