The men go to the cave to unlock the door. They find Injun Joe dead at the entrance. Tom feels sorry for him, though he is also relieved.
Injun Joe had tried to hack away at the door with his knife. He had eaten candles and bats. He waited patiently for water drips. His cap would become a tourist attraction in the future.
Injun Joe is buried at the mouth of the cave. People enjoy the funeral as much as they would have a hanging. A petition asking for Injun Joe’s pardon was halted by the funeral.
Tom tells Huck he didn’t tell on the tavern keeper, who had been secretly hiding booze. Huck tells Tom about the incident at the Widow’s. He doesn’t want people to know, even with Injun Joe dead, that he was the one who revealed Injun Joe’s plot. He fears Injun Joe has friends.
Tom is certain that the money is in the cave. He knows another way into the cave that no one knows about. He makes plans for what they need for the expedition.
Tom feels like a real robber now. He has a secret hide out nobody knows about. He tells Huck more romantic stories about women robbers abduct. They keep the women in the caves, and after a while, the women fall in love with them and don’t want to leave.
Huck worries Injun Joe’s ghost haunts the place. Tom believes he’d haunt the cave entrance where he died. He shows Huck a cross mark on the wall. This is the clue to Injun Joe’s secret hideout—and it is a fortunate symbol, as it will scare away the ghost.
They search the den. They dig under the cross and encounter boards. The boards lead to a chasm. They find the treasure. They put the treasure into smaller bags to make it easier to carry.
The boys return to the village, planning to divide the treasure up. They encounter the Welshman, who wants them to come with him. The Thatchers, Tom’s family, the minister, the Harpers, and the Rogerses have gathered at the Widow’s house. They are dressed smartly, making the dirty boys’ appearance even more shameful.
The Widow Douglas brings them to a room to wash. She gives them each a suit.