"No," he said slowly, "it won't do. Too risky. Guess they haven't seen me. If not, they will be back. And next time," he shook his fist at the vanishing car, "next time my fair lad or lady, you won't escape me."

Turning back, he again disappeared into the brush.

In the meantime things were happening in the air. Coles Masters, who was in charge of the secret tower room, had his hands full. He switched on this loud-speaker and lowered that one to a whisper. He tuned in this one and cut that one out.

"Whew!" he exclaimed, mopping his brow, "what a night! Wish Curlie were here."

To start the night's entertainment a boy had broken in on the radio concert. Then a crank had come shouting right into the middle of a speech by a politician. A few moments later a message on 1200 had fairly burst his ear-drums. The message had been short, composed of just three words:

"Dark, cloudy night."

"Regular thunderbolt behind that!" he muttered as he measured the location and found it to come from the city's great hotel. "Enough there to send it round the world. Shouldn't be surprised to get the echo of it in a few seconds myself. The nerve of the man!"

In strange contrast to this was the whisper which followed within five minutes. It was sent on 200.

"Hello, Curlie. Did you get that? Terrible, wasn't it?" came the whisper. "But, Curlie, I don't think you need to bother about him. He's leaving in a day or two. He's going, far, far away. He's going north; out of your territory entirely. I know you'd love to catch him, Curlie, but it would be dangerous, awfully dangerous! So don't you try, for he is going far, far away."

Coles Masters' fingers had worked rapidly during this whispered message. Not only had he measured the distance and taken the location, but he had written down the message word for word.