Both lads started back in surprise, for the man had spoken in English and without the trace of an accent.
"Great Scott!" exclaimed Frank. "You must be an Englishman."
The man laid a finger to his lips.
"Sh-h-h!" he warned. "Walls have ears, you know. So you don't know me?"
The lads gazed at him closely.
"I know I have seen you some place," declared Jack.
"So have I," said Frank.
"And to think that they don't know me," said the man, half to himself.
Then he addressed them again.
"I guess it is as well that you have not recognized me, but did I not know you so well I would not say what I am about to say. That is this. I am an Englishman and I am here on an important business. Tomorrow night I shall return to England. Give me your words to remain quiet here until then, in the meantime not trying to learn my identity, and you shall all go with me. Is it a bargain?"
Frank looked at the man sharply. Was he fooling them? Well, the lad decided, they had everything to gain and nothing to lose.