The moon door had closed! O'Keefe took a stumbling step toward the barrier behind us.

There was no mark of juncture with the shining walls; the slab fitted into the sides as closely as a mosaic.
"It's shut all right," said Larry.

"But if there's a way in, there's a way out.

Anyway, Doc, we're right in the pew we've been heading for--so why worry ?" He grinned at me cheerfully.

The man on the floor groaned, and he dropped to his knees beside him.
"Marakinoff!" he cried.
At my exclamation he moved aside, turning the face so I could see it.
It was clearly Russian, and just as clearly its possessor was one of unusual force and intellect.
The strong, massive brow with orbital ridge unusually developed, the dominant, high-bridged nose, the straight lips with their more than suggestion of latent cruelty, and the strong lines of the jaw beneath a black, pointed beard all gave evidence that here was a personality beyond the ordinary.
"Couldn't be anybody else," said Larry, breaking in on my thoughts.
"He must have been watching us over there from Chau-ta-leur's vault all the time." Swiftly he ran practised hands over his body; then stood erect, holding out to me two wicked-looking magazine pistols and a knife.