The Scot's eyes lit. His face contorted, and he gave a short hard laugh.
"I'm more than willing," he said briefly. Then, with a curious unconcern for the warning, he turned to the drawings and gazed down at them affectionately. "Man, but they're beautiful. Did you—get them, Mr. Ruxton?"
There was no mistaking the implication.
"They are not stolen, McGrath," said Ruxton quietly. "At least not in the manner you are thinking. They were given to us by the inventor, whose property they were. But—they represent one of Germany's most treasured secrets."
The Scot nodded.
"Fine," he said, and the ring in his voice left the two men more than satisfied.
Sir Andrew smiled in his most genial fashion.
"Good," he exclaimed. "I shall be free in half an hour, McGrath. We'll go into details then. Thank you."
The engineer departed as hastily as he had appeared, and Ruxton dropped back into his seat. His father was still contemplating the plans.
At last he spoke without looking up.