“Find out anything?” demanded Hunter who was waiting for them when they landed.
“Not much,” said Ralph, “but I’m going to ride the westbound plane tomorrow morning. Maybe we’ll know more then.”
“What’s this theory about the Sky Hawk you’re working on?” asked Tim when they were alone.
“It’s hardly a theory,” admitted Ralph. “A hunch maybe, but not a theory. Look at this.”
He pulled the chunk of corroded copper from his pocket.
“It’s one of the cabin fittings,” said Tim recognizing the piece from the wrecked plane, “but what of it.”
“Nothing much,” replied Ralph, “except it holds the secret of the Sky Hawk’s power.”
“What! You’re crazy.”
“No, I’m not crazy. It’s as plain as day. You wait and see.”
“I’ll wait, all right,” agreed Tim. “Either you’re awful bright or I’m awfully dumb. But this is your show. You must have a good idea of how the Sky Hawk is bringing down these planes. Here’s luck.”