Goldberger worried his moustache with nervous fingers, as he stared at the adept, plainly at a loss how to proceed.

"Perhaps," ventured Godfrey, softly, "your crystal could give us some further information which we very much desire."

The adept turned his dark eyes on the speaker, and it seemed to me that they glittered more coldly, as though they recognised an adversary.

"What information, sir?" he asked.

"Information as to the manner of Mr. Vaughan's passing—can you tell us anything of that?"

The adept shook his head.

"I only saw the soul as it passed over. I knew, however, that it had been torn from the body by violence."

"How did you know that?" broke in Goldberger.

"Because of its colour," answered the adept; and then, when he saw our benumbed expressions, he explained. "Souls which pass in peace are white; souls which the body has driven forth by its own hands are black; souls which are torn from the body by an alien hand are red. My pupil's soul was red."

I could see that Goldberger did not know whether to snort with derision or to be impressed. He ended by smiling feebly. As for me, I admit I was impressed.