"Come, mademoiselle," he said in a jeering tone. "Come to bye-bye! Sleep better than on this sofa! You will sleep a longer sleep, that's certain!" An evil smile punctuated these sinister remarks.

He laid the poor girl's body on the floor in the middle of the room; then, approaching a little gas stove, he detached the india-rubber tube and slipped the end of it between his victim's teeth.

He turned the gas tap....

"Perfect!" he said, as he straightened himself.

"To-morrow morning, early, at eight o'clock, or at nine, the excellent Madame Bourrat will open the meter. The narcotic this child has taken will prevent her from waking, so that, without suffering, without cries, quite gently—pfuit!... sweet Elizabeth will pass from life to death!... But it will not do to linger here ... let us find Jules and give him the necessary instructions!"

The stranger went out into the corridor closing the door. The thing had been well managed; the screws keeping the bolt case in position were put back in their holes—the key remained inside—no one would suspect that only a slight push was necessary to get into the room.

With a chuckle, the stranger bent down and pushed a tassel under the door.

The servant must not discover the trick when she is sweeping the passage: now with this wedge, the door cannot be opened without a violent push.

With a last glance up and down the passage, illuminated for a moment by his electric torch, the stranger made sure that there was no one about to see him; then, with silent tread, he began to go downstairs....

Half-way down, his accomplice awaited him.