There were three men who could be dangerous if they chose. Yet they all seemed governed by the dynamic mind of Professor Whitburn. They discussed nothing among themselves. Each went to headquarters for instructions.
Now another day was drawing to its close. Harry sat in the plainly furnished living room, and let his mind wander from the books before him. It was after six o’clock. Dinner would soon be ready.
Marsh entered. He did not speak to Harry. He went across the room, and pushed aside a sliding panel in the wall. He revealed a radio set — something which Harry had not known was here.
Marsh adjusted the dials, and listened for a few minutes to a New England station. Then, as though he had refreshed his mind sufficiently with entertainment, he turned off the switch, and closed the panel.
Dinner was ready shortly after that. During the meal, Marsh made a few remarks, addressed chiefly to Stokes, who grunted brief replies. When the men had finished eating, it was dark outside. The night was cloudy, and a wind was gathering.
Harry went back to his books. He concentrated a while; then his mind turned from his work, and he found it very boring, alone in the living room, which was dim, except in the one corner where he sat. He noted that it was nearly nine o’clock; and he sensed an immediate opportunity.
Here was his chance to tune in on Station WNX. Now that he knew of the existence of the radio set, he might receive a message.
THE idea was a good one. Harry opened the sliding panel, and obtained WNX just as a program was ending. The theme song of the nine-o’clock program came softly over the air. Harry kept the sound as low as possible.
He listened intently to the words of the announcer. At first they were of no significance; then came a sentence which held an important meaning.
“Once again I meet my radio audience,” were the words of the announcer. “I introduce a man who will speak to you now; but who also has other things in store for you. He will be with us again, to-morrow night — “