you have proof of that, arrest him.'
'I have no proof at the present moment, but I request you to delay the delivery of the goods.'
'That is absurd,' he cried impatiently. 'The necklace is his, not ours. The money has already been transferred to the account of the Government; we cannot retain the five million francs, and refuse to hand over to him what he has bought with them,' and so the man left me standing there, nonplussed and anxious. The eyes of everyone in the room had been turned on us during our brief conversation, and now the official proceeded ostentatiously up the room with a grand air of importance; then, with a bow and a flourish of the hand, he said, dramatically,—
'The jewels belong to Monsieur.'
The two Americans rose simultaneously, the taller holding out his hand while the auctioneer passed to him the case he had apparently paid so highly for. The American nonchalantly opened the box and for the first time the electric radiance of the jewels burst upon that audience, each member of which craned his neck to behold it. It seemed to me a most reckless thing to do. He examined the jewels minutely for a few moments, then snapped the lid shut again, and calmly put the box in his outside pocket, and I could not help noticing that the light overcoat he wore possessed pockets made extraordinarily large, as if on purpose for this very case. And now this amazing man walked serenely down the room past miscreants who joyfully would have cut his throat for even the smallest diamond in that conglomeration; yet he did not take the trouble to put his hand on the pocket which contained the case, or in any way attempt to protect it. The assemblage seemed stricken dumb by his audacity. His friend followed closely at his heels, and the tall man disappeared through the folding doors. Not so the other. He turned quickly, and whipped two revolvers out of his pockets, which he presented at the astonished crowd. There had been a movement on the part of every one to leave the room, but the sight of these deadly weapons confronting them made each one shrink into his place again.
The man with his back to the door spoke in a loud and domineering voice, asking the auctioneer to translate what he had to say into French and German; he spoke in English.
'These here shiners are valuable; they belong to my friend who has just gone out. Casting no reflections on the generality of people in this room, there are, nevertheless, half a dozen "crooks" among us whom my friend wishes to avoid. Now, no honest man here will object to giving the buyer of that there trinket five clear minutes in which to get away. It's only the "crooks" that can kick. I ask these five minutes as a favour, but if they are not granted I am going to take them as a right. Any man who moves will get shot.'
'I am an honest man,' I cried, 'and I object. I am chief detective of the French Government. Stand aside; the police will protect your friend.'
'Hold on, my son,' warned the American, turning one weapon directly upon me, while the other held a sort of roving commission, pointing all over the room. 'My friend is from New York and he distrusts the police as much as he does the grafters. You may be twenty detectives, but if you move before that clock strikes three, I'll bring you down, and don't you forget it.'
It is one thing to face death in a fierce struggle, but quite another to advance coldly upon it toward the muzzle of a pistol held so steadily that there could be no chance of escape. The gleam of determination in the man's eyes convinced me he meant what he said. I did not consider then, nor have I considered since, that the next five minutes, precious as they were, would be worth paying my life for. Apparently everyone else was of my opinion, for none moved hand or foot until the clock slowly struck three.
'Thank you, gentlemen,' said the American, as he vanished between the spring-doors. When I say vanished, I mean that word and no other, because my men outside saw nothing of this individual then or later. He vanished as if he had never existed, and it was some hours before we found how this had been accomplished.
I rushed out almost on his heels, as one might say, and hurriedly questioned my waiting men. They had all seen the tall American come out with the greatest leisure and stroll towards the west. As he was not the man any of them were looking for they paid no further attention to him, as, indeed, is the custom with our Parisian force. They have eyes for nothing but what they are sent to look for, and this trait has its drawbacks for their superiors.
I ran up the boulevard, my whole thought intent on the diamonds and their owner. I knew my subordinate in command of the men inside the hall would look after the scoundrel with the pistols. A short distance up I found the stupid fellow I had sent out, standing in a dazed manner at the corner of the Rue Michodière, gazing alternately down that short street and towards the Place de l'Opéra. The very fact that he was there furnished proof that he had failed.
'Where is the American?' I demanded.
'He went down this street, sir.'
'Then why are you standing here like a fool?'
'I followed him this far, when a man came up the Rue Michodière, and without a word the American handed him the jewel-box, turning instantly down the street up which the other had come. The other jumped into a cab, and drove towards the Place de l'Opéra.'
'And what did you do? Stood here like a post, I suppose?'
'I didn't know what to do, sir. It all happened in a moment.'
'Why didn't you follow the cab?'
'I didn't know which to follow, sir, and the cab was gone instantly while I watched the American.'
'What was its number?'
'I don't know, sir.'
'You clod! Why didn't you call one of our men, whoever was nearest, and leave him to shadow the American while you followed the cab?'
'I did shout to the nearest man, sir, but he said you told him to stay there and watch the English lord, and even before he had spoken both American and cabman were out of sight.'
'Was the man to whom he gave the box an American also?'
'No, sir, he was French.'
'How do you know?'
'By his appearance and the words he spoke.'
'I thought you said he didn't speak.'
'He did not speak to the American, sir, but he said to the cabman, "Drive to the Madeleine as quickly as you can."'
'Describe the man.'
'He was a head shorter than the American, wore a black beard and moustache rather neatly trimmed, and seemed to be a superior sort of artisan.'
'You did not take the number of the cab. Should you know the cabman if you saw him again?'
'Yes, sir, I think so.'
Taking this fellow with me I returned to the now nearly empty auction room and there gathered all my men about me. Each in his notebook took down particulars of the cabman and his passenger from the lips of my incompetent spy; next I dictated a full description of the two Americans, then scattered my men to the various railway stations of the lines leading out of Paris, with orders to make inquiries of the police on duty there, and to arrest one or more of the four persons described should they be so fortunate as to find any of them.
I now learned how the rogue with the pistols vanished so completely as he did. My subordinate in the auction room had speedily solved the mystery. To the left of the main entrance of the auction room was a door that gave private access to
