David Wilson arrives in Dawson's Landing and earns the mocking nickname 'pudd'nhead' after a sarcastic remark is taken literally by townspeople.

Two boys are born on the same day in Percy Driscoll's household — one to Percy's wife and one to the enslaved Roxy.

Roxy secretly switches the identities of the two babies to save her son from a lifetime of slavery.

Percy Driscoll dies, frees Roxy on his deathbed, and leaves Tom in the care of Judge Driscoll.

Tom returns from two years at Yale having acquired gambling debts, a drinking habit, and manners that alienate him from his hometown.

Twin Italian counts Luigi and Angelo Cappello arrive in Dawson's Landing as boarders at Patsy Cooper's house.

Roxy returns to Dawson's Landing penniless after losing her savings in a bank collapse.

Roxy reveals to Tom that he is actually her son Valet de Chambre, born into slavery, not the true heir of the Driscoll family.

Luigi kicks Tom across a crowded party after Tom publicly insults the twins, causing a brawl and a fire.

Judge Driscoll tears up his will and disowns Tom after learning Tom took Luigi to court rather than challenging him to a duel.

Tom forges a bill of sale and sells Roxy down the river to an Arkansas cotton planter, betraying her plan to help him pay his debts.

Tom, disguised in women's clothing, breaks into Judge Driscoll's home and stabs the Judge with the stolen Indian dagger when the Judge wakes and cries out.

The Italian twins are arrested for Judge Driscoll's murder after being found entering the house in response to his cries.

Wilson presents fingerprint evidence at the murder trial proving the twins are innocent and identifying Tom as the real killer.

The governor pardons the convicted man from prison, but creditors immediately sell him down the river to recover Percy Driscoll's debts.

Pudd'nhead Wilson opens in a small Missouri river town where a newly arrived lawyer is branded a fool after a misunderstood remark, and two boys are born into the same household on the same day. The enslaved mother Roxy switches the babies to protect her son from a life of slavery, and for two decades the deception holds while the switched son Tom grows into a reckless gambler and thief. When Roxy returns broke and broken, she shatters Tom's world by revealing his true identity, but rather than changing his ways, Tom's desperation deepens until he murders his uncle to escape his debts. The Italian twins Luigi and Angelo, who happened to be outside that night, are arrested for the crime, and it falls to Pudd'nhead Wilson — long dismissed as a fool — to save them. Using his decades-long hobby of collecting fingerprints, Wilson exposes Tom at trial and restores his own reputation at last. In a final bitter irony, the man born into slavery but raised as a white gentleman is himself sold down the river, the very fate Roxy had tried so hard to prevent.

The headline story of switched identities, murder, and justice.

Mrs. Percy Driscoll dies shortly after giving birth, leaving Roxy to raise both newborn boys in the Driscoll household.

Wilson, with no law clients and plenty of time, takes up the hobby of collecting fingerprints from the residents of Dawson's Landing.

Roxy, haunted by the threat of slavery for herself and her son, resolves to drown herself and her baby rather than face that fate.

Roxy visits Wilson with the babies after the swap so he re-fingerprints them, labeling the slides with the names Roxy provides.

Tom grows up thoroughly spoiled by Roxy's deference, while Chambers receives no affection and is treated with contempt.

Chambers repeatedly defends Tom from the town's boys and even saves Tom's life, but Tom repays him by stabbing him.

Judge Driscoll takes Luigi and Angelo on a tour of Dawson's Landing and brings them to a Freethinkers Society meeting where they befriend Wilson.

Wilson reads Luigi's palm and independently identifies the same secret Luigi had written down — that Luigi once killed a man.

Tom steals the jeweled Indian dagger from the Cappello twins and plans to pawn it to cover his debts.

Judge Driscoll formally challenges Luigi to a duel to restore the Driscoll family honor that Tom refused to defend himself.

Judge Driscoll campaigns against the twins in the alderman election, deriding them as frauds, and Wilson wins the seat while the twins are crushed.

Roxy escapes the cotton plantation by knocking out the overseer, stealing a horse, and fleeing by canoe to board a steamboat.

Roxy confronts Tom in St. Louis with the full horror of what he did by selling her down the river.

Humiliated by their election defeat, the twins withdraw entirely from Dawson's Landing society and take to walking alone late at night.

Wilson is celebrated as a hero by the townspeople of Dawson's Landing, and Angelo and Luigi Cappello quietly leave Missouri and return to Italy.

Behind the headline events of Pudd'nhead Wilson lies a web of smaller but crucial moments that shaped every character's fate. Roxy's decision to switch the babies grew directly out of her fear of being sold down the river, and the consequences of that switch played out across two decades in the contrasting lives of Tom and Chambers. The arrival of Luigi and Angelo set off a chain of social upheaval, from their celebrated introduction to Dawson's Landing to their humiliating defeat in the alderman election. Wilson's quiet friendship with the twins gave him the access and evidence he needed to eventually solve the murder. Meanwhile, Roxy's escape from the cotton plantation and her furious return to confront Tom showed that the consequences of cruelty have a way of circling back. These secondary events are the connective tissue of the novel, the moments where character is revealed, alliances are formed, and the machinery of the tragedy is set in motion.

The supporting events and relationships that built toward the tragedy.

Percy Driscoll threatens to sell all his slaves down the river after money goes missing, forcing every enslaved person in the household to confess.

While dressing her baby for a planned drowning, Roxy puts Tom's clothing on Valet de Chambre and realizes the two babies are completely indistinguishable.

Wilson spots a young woman in Tom Driscoll's bedroom window while Tom is supposedly away in St. Louis, and grows quietly suspicious.

Roxy threatens to tell Judge Driscoll what she knows about Tom unless he pays her, reversing the power between mother and son.

Roxy tells Tom that his real biological father was Colonel Cecil Essex, a gentleman of Virginia's First Families.

Tom, disguised as a woman, robs townspeople across Dawson's Landing while the crowd at Patsy Cooper's house is distracted by the twins.

Angelo recounts how Luigi killed a servant who crept in to steal the Indian dagger, explaining the violent act Wilson had seen in Luigi's palm.

Tom discovers that Wilson has alerted police and pawnbrokers about the stolen Indian dagger, making it impossible for Tom to sell it.

Judge Driscoll restores Tom to his will, blaming himself for Tom's failings and unaware that Tom has overheard the decision.

Tom boards a steamboat to sell his stolen goods in St. Louis, but falls asleep and wakes to find another thief has taken everything.

Roxy proposes that Tom sell her into slavery for six hundred dollars, intending for them to split the money and free her within a year.

Luigi tries to arrange a second duel with Judge Driscoll, but the Judge refuses to duel a man he now regards as an assassin.

Tom visits Wilson intending to mock him and inadvertently leaves his fingerprints on Roxy's labeled slide, triggering Wilson's breakthrough realization.

Wilson compares the adult Tom's fingerprints to his childhood records and realizes the two babies in the Driscoll household were switched as infants.

The real Thomas à Becket Driscoll is revealed to be white but has grown up enslaved and cannot read, write, or function in white society.

Pudd'nhead Wilson is driven by a series of pivotal moments where a single decision or discovery alters the course of every life in Dawson's Landing. The threat of being sold down the river set Roxy's entire plan in motion, and a chance observation — that two babies dressed alike were indistinguishable — gave her the idea to act on it. For decades the deception held, but small cracks appeared: Wilson's suspicious glimpse through a window, Roxy's accumulating leverage over Tom, and Tom's increasingly reckless crimes. When Tom's thieving and manipulation finally caught up with him, it was his own arrogance that sealed his fate — a casual visit to Wilson's home left the fingerprint evidence that unraveled everything. At the end, the revelation of the switch exposed not just a crime but the arbitrary cruelty of a society that had assigned freedom and slavery based on nothing more than which cradle a baby happened to lie in.