“Then you disown it?”

“Entirely. I hope you intend to tell me how it came into your possession.”

“It is written, as you see, to Mr. Warburton—”

“To Mr. Alan Warburton; yes.”

“Introducing one Mr. Grip, late of Scotland Yards.”

“I see.”

“Well, sir, Mr. Warburton received this note the day on which it was dated.”

The Chief glanced sharply at the date.

“And on that same day, Mr. Augustus Grip presented himself, stating that he was sent from this Agency, with full authority to take such measures as he saw fit in prosecuting the search for the lost child.”

“Well?”