“I am going to rely on you. I need your help. The Shadow saved my life once, and nabbed a bunch of counterfeiters for me. I believe he is on the square. I’m going to chance it.”
He rose from his chair, and looked at Harry steadily. Then he asked:
“Those things that you saw last night — in the darkness above the house. Tell me. What did they look like?”
“Ghosts,” admitted Harry.
The secret-service agent chuckled.
“They were aerial torpedoes,” he said. “The results of Professor Whitburn’s long experiments.”
“But they shone like phantoms — “
“Of course. Listen, Vincent. Professor Whitburn has made a remarkable contribution to scientific warfare. His aerial torpedoes are under perfect control.
“Last night, he sent them out from the big machines in the corners of the tower. They were ejected shortly after nine o’clock — “
“That’s why the static came in on the radio!” exclaimed Harry.