I described her, but he shook his head.

“To my knowledge Mr. De Gex hasn’t got a niece,” he said.

“Were you here five weeks ago?” I inquired.

“Five weeks ago? No. I and my wife went away down to Swanage to see her sister. The master gave us a fortnight’s holiday. Why?”

“Oh—nothing,” I replied. “I merely inquired as I want to clear up a mystery—that’s all.”

“What mystery?”

“The mystery of Miss Engledue—your master’s niece,” I answered.

“But I’ve never heard of any niece,” he said.

“A young lady of about twenty-one with dark hair and eyes, and a beautiful complexion,” I said.

But the old servant’s mind was a blank.