The Detective and the Nurse rose up, and we took their places.

Sergeant Daw was the last to go out; he closed the door behind him as we had arranged.
For a while I sat quiet, my heart beating.

The place was grimly dark.
The only light was a faint one from the top of the lamp which threw a white circle on the high ceiling, except the emerald sheen of the shade as the light took its under edges.

Even the light only seemed to emphasize the blackness of the shadows.

These presently began to seem, as on last night, to have a sentience of their own.