“I think I know where they have gone,” he said.

Again I looked at him in astonishment.

“Then you know who this man is?”

Walker replied with an abrupt query:

“Did you see the inside of his hand—the right hand? That was the thing to see.”

“How about the girl?” I replied, for Walker’s indirections were putting me on my mettle. “Her hand will be the thing to see; it’s got Bartoldi’s diamond on it.”

He looked up rather vaguely.

“I am puzzled about the girl; I do not understand what the girl has to do with it.”

I laughed.

“Bartoldi understood,” I said.