Presently he spoke again. "There is one favor I must ask of you, to tighten the noose around this man's neck. Will you testify before the authorities that you found the blue-print in his kit-bag? Otherwise I cannot prove that it was in his possession. The theft of the receipt constitutes a military crime; but the blue-print convicts him of murder, either as principal or accessory. I can promise you there will be no publicity. Will you help me?"

"I have sworn to."

"Do you know that blond man's name?"

"No."

"Neither do I. Curious thing. In that little red book there are three descriptions; these vary only in the occupations of the men described. All three are bulky, blond, and ruddy. Until now I dared not be inquisitive."

"And will you do me a favor?"

"Ask it."

"Let me see it through."

"You mean, go back with me to the hotel?"

"Yes."