“Well, you come in here and listen, if you think I’m dreaming,” retorted Fenn.
Frank jumped out of his berth and came into his chum’s room. The buzzing had increased in intensity, and Frank had no difficulty in hearing it.
“What did I tell you?” asked Fenn, in triumph.
“It is a queer sound,” admitted Frank. “What’s in that next room?”
“Nothing, that I know of. I passed it this morning, the door was open, and it was empty.”
“Then let’s have a look,” suggested Frank, stepping out into the passage.
“Maybe you’d better—maybe it’s a—” stammered Fenn.
“Well, what?” demanded Frank. “Are you afraid?”
“Maybe it’s an infernal machine those smugglers put aboard,” went on Fenn. “It sounds just like one.”
“How do you know how an infernal machine sounds?” asked Frank.