CHAPTER VIII.
Harren started, then walked slowly to the center of the room as the pretty stenographer passed out with a curious level glance at him.
"Why do you say that photography plays a part in my case ?" he asked.
"Doesn't it ?" "Yes.

But how--" "Oh, I only guessed it," said Keen with a smile.

"I made another guess that your case involved a cipher code.

Does it ?" "Y-es," said the young man, astonished, "but I don't see--" "It also involves the occult," observed Keen calmly.

"We may need Miss Borrow to help us." Almost staggered, Harren stared at the Tracer out of his astonished gray eyes until that gentleman laughed outright and seated himself, motioning Harren to do likewise.
"Don't be surprised, Captain Harren," he said.