A cold sweat burst out all over the darky.
He gazed around in alarm, and gasped hoarsely:
"If I tell, will yo' gib me away?"
"To whom?"
"Massa Mason."
"Of course not."
"Den listen. Dar's a tunnel under de flo' ob dat hut."
"Where does it lead to?"
"A big cave under de island in de swamp."
"How do you reach it?"