“Sure! That’s easy enough,” Laura promised him. “I’ll be waiting for you.”

She hurried off and Quest commenced his own preparations. From his safe he took one of the small black lumps of explosive to which he had once before owed his life, and fitted it carefully in a small case with a coil of wire and an electric lighter. He looked at his revolver and recharged it. Finally he rang the bell for his confidential valet.

“Ross,” he asked, “who else is here to-day besides you?”

“No one to-day, sir.”

“Just as well, perhaps,” Quest observed. “Listen, Ross. I am going out now for an hour or two, but I shall be back at mid-day. Remember that. Mrs. Rheinholdt and Inspector French are to be here at twelve o’clock. If by any chance I should be a few moments late, ask them to wait. And, Ross, a young woman from the Salvation Army will call too. You can give her this cheque.”

Ross Brown, who was Quest’s secretary-valet and general factotum, accepted the slip of paper and placed it in an envelope.

“There are no other instructions, sir?” he enquired.

“None,” Quest replied. “You’ll look out for the wireless, and you had better switch the through cable and telegraph communication on to headquarters. Come along, Lenora.”

They left the house, entered the waiting automobile, and drove rapidly towards the confines of the city. Quest was unusually thoughtful. Lenora, on the other hand, seemed to have lost a great deal of her usual self composure. She seldom sat still for more than a moment or two together. She was obviously nervous and excited.

“What’s got hold of you, Lenora?” Quest asked her once. “You seem all fidgets.”