"I see it is." Miller weighed the bullet in his hand. "You have something more to tell me, Heinrich; out with it."
"Yes, Herr Captain. That night I bribed Vincent to let me valet Mr. Whitney, and I found the vest he wore that afternoon. In it, over the heart, was a round hole."
"Did the bullet fit it?"
"Exactly." There was a protracted silence, which the chauffeur broke with a question. "What do you make out of it, sir?"
Miller did not answer directly. "Was Mr. Whitney wearing his ordinary business suit?" he inquired.
"Yes, Herr Captain."
"You are sure he wore nothing over it?"
"Absolutely positive."
Miller handed back the bullet. "It rather looks as if Mr. Whitney has invented some wearing apparel which Mauser bullets cannot penetrate," he said slowly, "or else…."
"Yes, Herr Captain."