"Yes," I said at last. It was not too hard for me, for I thought I was yielding him Venza, not Anita.

Snap was very pale. He stared from one to the other of us.

"Yes," he said finally. "But Colonel, surely you can tell us more."

Halsey tossed his cigarette away. "I will tell you as much as I think best. These Martians, Molo and his sister, do not know of Venza; at least, I think that they do not. They apparently have not been here very long. How they got here, we don't know. There was no passenger or freight ship. In Ferrok-Shahn, they have a dubious reputation at best; but I won't go into that.

"Venza, I will show you these Martians and the rest depends upon you. There is a mystery; you will find out what it is."

He reached for his inter-office audiphone. "I want to locate the Martian Set Molo. Francis, Staff X2, has it in charge."

The audible connection came in a moment. "Francis?"

We could hear the answering microphonic voice, "Yes Colonel."

"Is the fellow in a public place by any chance?"

"In the Red Spark Cafe, Colonel. With his sister and a party."