“That is true,” said Dick thoughtfully, and, leaning out to the driver, Elk gave new directions.

The grey of dawn was in the sky as the car ran through the deserted streets of Horsham and began the steady climb toward Maytree Cottage, which lay on the slope of the Shoreham Road.

The cottage showed no signs of life. The blinds were drawn; there was no light of any kind. Dick hesitated, with his hand on the gate.

“I don’t like waking these people,” he confessed. “Old Bennett will probably think that I’ve brought some bad news about his son.”

“I have no conscience,” said Elk, and walked up the brick path.

But John Bennett required no waking. Elk was hailed from one of the windows above, and, looking up, saw the mystery man leaning with his elbows on the window-sill.

“What’s the trouble, Elk?” he asked in a low voice, as though he did not wish to awaken his daughter.

“No trouble at all,” said Elk cheerfully. “We picked up a wireless telephone message in the night, and I’m under the impression that it was your daughter’s voice I heard.”

John Bennett frowned, and Dick saw that he doubted the truth of this explanation.

“It is perfectly true, Mr. Bennett,” he said. “I heard the voice too. We were listening in for a rather important message, and we heard Miss Bennett in circumstances which make it necessary for us to assure ourselves that it was not she who was speaking.”