It was the work of an instant.

He reclosed the lid. It snapped and startled him.

Next moment his light was switched off and he disappeared.

A second later, however, Jean turned the handle of the door, entered the room, and again switched on the light.

The place became flooded with electricity, and she stood a pale, erect figure, staring at the clock, which was just chiming the hour of midnight.


CHAPTER XXVIII.

THE CLOSED BOX.