Witnessing the Graveyard Murder
On a summer night, Tom Sawyer and Huckleberry Finn, armed with a dead cat and a superstition about curing warts, crept into the old-fashioned Western graveyard on a hill a mile and a half from the village of St. Petersburg. The cemetery was a ruin of sunken graves and worm-eaten boards, overgrown with rank grass and weeds, and the boys, oppressed by the solemn silence, hid within the protection of three great elms a few feet from the fresh heap of Hoss Williams's grave. They waited, whispering about whether the dead could hear them, until a muffled sound of voices and the freckled light of a tin lantern announced the arrival of three figures: Muff Potter, Injun Joe, and young Doctor Robinson, who had come to rob the grave for medical purposes.
The Murder and the Frame
The men pried open the coffin, dumped the body rudely on the ground, and bound it to a handbarrow. When Potter demanded an additional five dollars, Injun Joe reminded the doctor of a five-year-old grudge—the doctor had driven him from his father's kitchen and had him jailed for vagrancy—and swore he would settle it. The doctor struck Injun Joe to the ground, and Potter grappled with the doctor. As they struggled, Injun Joe sprang up, snatched Potter's knife, and, creeping catlike around the combatants, drove the blade to the hilt in the young man's breast. The doctor fell, partly upon Potter, flooding him with blood. The moon was blotted out by clouds, and the two terrified boys fled into the dark. When the moon emerged again, Injun Joe stood over the two forms, robbed the body, placed the fatal knife in Potter's open right hand, and sat down on the dismantled coffin. When Potter stirred and moaned, finding the knife in his hand, Injun Joe coolly lied, telling him that they had scuffled and that Potter, reeling and staggering, had snatched the knife and stabbed the doctor. Potter, drunk and confused, believed him and begged Joe not to tell, calling him an angel. Injun Joe promised to keep silent, then sent Potter away and muttered to himself that the man would be too frightened to return for the knife.
The Blood Oath of Silence
Tom and Huck, speechless with horror, fled to the old tannery, where they realized that if they told what they had seen, Injun Joe would kill them. They swore a solemn oath of secrecy, writing it on a pine shingle with a fragment of red keel and signing it in their own blood, then buried the shingle near the wall with dismal ceremonies and incantations. The fetters that bound their tongues were considered locked and the key thrown away. This oath would torment them for weeks, as they watched the innocent Muff Potter be arrested, tried, and nearly condemned for a murder they knew he did not commit.
Consequences and Aftermath
The murder became the absorbing topic of the village. A gory knife recognized as Potter's was found near the body, and a belated citizen reported seeing Potter washing himself in a branch at one or two in the morning. The Sheriff captured Potter, and at the inquest Injun Joe repeated his lie under oath, confirming the boys' belief that he had sold himself to the devil. Tom's conscience gnawed at him; he talked in his sleep, complained of toothache to avoid suspicion, and secretly brought small comforts to Potter in the jail. The secret weighed on him until the trial, when Tom, driven by his conscience, took the stand and testified to the truth, causing Injun Joe to spring through a window and escape. The event thus set in motion the entire second half of the novel: Injun Joe's flight, his revenge plot against the Widow Douglas, the treasure hunt in the haunted house, and the final confrontation in McDougal's Cave, where Injun Joe starved to death behind the sealed door. The graveyard murder is the novel's dark center, the moment that transforms Tom's boyish adventures into a genuine moral ordeal and forces him to choose between the safety of silence and the justice of truth.