"But, Godfrey," I asked, "what happened? What was she doing in there? What ..."

He stopped me with a hand upon my arm.

"I don't know. But she'll tell us when she comes around. I only hope they'll get Silva. That would make the victory complete."

He paused, for the hum of a motor-car came up the drive, and an instant later we caught the glare of the acetylenes. Then a voice hailed us.

"Hello, there," it called. "Shall I come up?"

"Is it you, doctor?" asked Godfrey, leaning out.

"Yes."

"Come right up, then, to Miss Vaughan's room."

We met him at the stair-head.

"Oh, it's you!" he said, recognising us. "What has happened now?"