He says they have come to the conclusion that a very well-known gang of New York criminals are in this thing.

We know how to track them down all right." [Illustration: SANFORD QUEST IS CALLED UPON TO CLEAR THE MYSTERY OF THE MURDER OF LORD ASHLEIGH'S DAUGHTER.] [Illustration: UNDER THE HYPNOTIC INFLUENCE OF QUEST, LENORA REVEALS THE STRANGE DISAPPEARANCE OF THE JEWELS, AND THE MURDER.] "I may go now, then ?" she repeated, with immense relief.
Quest escorted the girl downstairs, opened the front door, blew his whistle and his car pulled up at the door.
"Take this young lady," he ordered, "wherever she wishes.

Good night!" The girl drove off.

Quest watched the car disappear around the corner.
Then he turned slowly back and made preparations for his adventure....
"Number 700, New York," he muttered, half an hour later, as he left his house.

"Beyond Fourteenth Street--a tough neighbourhood." He hesitated for a moment, feeling the articles in his overcoat pocket--a revolver in one, a small piece of hard substance in the other.