Tom Walker took a short-cut home through the swamp and sat down to rest at the remains of an old Indian fort. His walking staff bumped into a skull on the ground so he kicked it. "Let that skull alone!" said a gruff voice. Tom lifted up his eyes and beheld a great black man seated directly opposite him, on the stump of a tree." Tom had just met the devil.
As the devil and Tom reached the end of the swamp, Tom asked if the devil could prove that everything that he has told him about the treasure was true. The devil pressed his finger to Tom's forehead leaving an impression. "When Tom reached home he found the black print of a finger burned, as it were, into his forehead, which nothing could obliterate."
The one condition that Tom was not allowed to mention was that the devil grants favors. The devil insisted that the money that Tom made should be used in the devil's service. The devil said, "you shall extort bonds, foreclose mortgages, drive the merchants to bankruptcy" and "you are the usurer for my money!" Tom agreed and sold himself to the devil.