With some effort, Teal kept his retort to himself. While the Prince attacked his eggs with a healthy appetite, Teal sipped a cup of coffee and munched on a slice of toast. For the hundredth time he surveyed the potentialities of the apartment. The bedroom and the sitting-room opened on either side of a tiny private hall, with the bathroom in between. The hall had a door into the corridor, outside which another detective was posted; there was no other entrance or exit except the open windows overlooking Hyde Park, through which the morning sun was streaming. The possibility of secret panels or passages was absurd. The furniture was modernistically plain, expensive, and comfortable. There was a chesterfield, three armchairs, a couple of smaller chairs, a writing desk, the centre table on which breakfast was laid, and a small side table on which stood the box containing the crown of Cherkessia. Not even a very small thief could have secreted himself in or behind any of the articles. Nor could he plausibly slip through the guards outside. Therefore, if he was to make good his boast, it seemed as if he must be inside already; and Teal's eyes turned again to the moustached representative of the Southshire Insurance Company. He would have given much for a legitimate excuse to seize the handlebars of that battle-scarred sleuth, one in each hand, and haul heftily on them; and he was malevolently deliberating whether such a manoeuvre could be justified in the emergency when the interruption came.
It was provided by Peter Quentin, who stood at another window of the hotel vertically above the Prince's suite, dangling a curious egg-shaped object at the end of a length of cotton. When it hung just an inch above Schamyl's window, he took up a yard of slack and swung the egg-shaped object cautiously outwards. As it started to swing back, he dropped the slack, and the egg plunged through the Prince's open window and broke the cotton in the jerk that ended its trajectory.
Chief Inspector Teal did not know this. He only heard the crash behind him, and swung around to see a pool of milky fluid spreading around a scattering of broken glass on the floor. Without stopping to think he made a dive towards it, and a gush of dense black smoke burst from the milky pool like a flame and struck him full in the face.
He choked and gasped, and groped around in a moment of utter blindness. In another instant the whole room was filled with a jet-black fog. The shouts and stumblings of the other men in the room came to him as if through a film of cotton-wool as he lumbered sightlessly towards the table where the crown had stood. He cannoned into it and ran over its surface with frantic hands. The box was not standing there any longer. In a sudden panic of fear he dropped to his knees and began to feel all over the floor around the table. . . .
He had already made sure that the box had not been knocked over on to the floor in the confusion, when the smoke in his lungs forced him to stagger coughing and retching to the door. The corridor outside was black with the same smoke, and in the distance he could hear the tinkling of fire alarms. A man collided with him in the blackness, and Teal grabbed him in a vicious grip.
"Tell me your name," he snarled.
"Mason, sir," came the reply; and Teal recognised the voice of the detective he had posted in the corridor.
His chest heaved painfully.
"What happened?"
"I don't know, sir. The door—opened from the inside— one of those damn smoke-bombs thrown out—started all this. Couldn't see—any more, sir."
"Let's get some air," gasped Teal.
They reeled along the corridor for what seemed to be miles before the smoke thinned out, and after a while they reached a haven where an open corridor window reduced it to no more than a thin grey mist. Red-eyed and panting, they stared at one another.
"He's done it," said Teal huskily.
That was the bitter fact he had to face; and he knew without further investigation, even without the futile routine search that had to follow, that he would never see the crown of Cherkessia again.
The other members of the party were blundering down towards them through the fog. The first figure to loom up was that of Prince Schamyl himself, cursing fluently in an incomprehensible tongue; and after him came the form of the Southshire Insurance Company's private bloodhound. Teal's bloodshot eyes glared at that second apparition insanely through the murk. Mr. Teal had suffered much; he was not feeling himself, and in the last analysis he was only human. That is the only explanation this chronicle can offer for what he did. For with a kind of strangled grunt, Chief Inspector Claud Eustace Teal lurched forward and took hold of the offensive handlebar moustaches, one in each determined hand. . . .
"Perhaps now you'll tell me how you did it," said Patricia Holm.