"Ventura replying, sir," Wilkins reported.
"I hear him," said Jack briefly. "Let me get at that key, Wilkins."
The operator sprang up and Jack took his place and strapped the receiver over his head.
"What's the trouble, Ventura?" he clicked.
"Held up by submarine," was the reply. "U-Boat due east of us. You can't see her. We sighted you just after we were boarded."
"Then how does it come you are at the key?" Jack clicked.
"Broke away from captors on deck. They are pounding at the door now."
"Have they sighted us?"
"They hadn't. There goes the door, Good-bye."
The flashes from the Ventura ceased. Jack sprang up and turned the receiver over to the operator.