The strictest orders were given and obeyed.

The ground, as you see it, is the ground as it was at twelve o'clock last night." Hanaud's face grew thoughtful.
"Is that so ?" he said, and he stooped to examine the second set of marks.

They were at the righthand side of the door.

"A woman and a man," he said.

"But they are mere hints rather than prints.