"If it interests you to know it," he remarked drily, "I was not the assailant. But for the fact that I was warned it might have been my body which you came across on the sands. I started a second too soon for our friend—and our exchange of compliments sent him to eternity."

"It was in self-defence, then?"

"Scarcely that. He would have run away if he could. I decided otherwise."

"Tell me who he was," I insisted.

Ray shook his head.

"Better for you not to know," he remarked reflectively. "Much better."

My cheeks grew hot with anger.

"Colonel Ray," I said, "this may yet be a serious affair for you. Why you should assume that I am willing to be a silent accessory to your crime I cannot imagine. I insist upon knowing who this man was."

"You have come to London," Ray answered quietly, "to ask me this?"

"I have told you before why I am here," I answered. "I will not be put off any longer. Who was that man, and what did he want with me?"