Tom Joad's Transformation
The Grapes of WrathFollows Tom Joad's evolution from a paroled killer to a socially conscious activist, inspired by Jim Casy's philosophy.
increasing
Bearing strength in each event
decreasing
Return from McAlester

The Ex-Convict
Tom's Arrival
Tom Joad hitches a ride with a truck driver and reveals he has been in McAlester prison for killing a man. He is paroled and returning to his family. He is wary but not ashamed. His time in prison has made him cautious and observant.
Reunion with Family
Tom finds his family preparing to leave for California. He is welcomed, but his mother worries that prison has made him bitter. Tom reassures her that he is not angry. He is ready to start anew.
The Parole Restriction
Tom is forbidden to leave Oklahoma. Crossing the state line violates his parole. This legal constraint hangs over him. He knows that any trouble could send him back to prison. The family's journey is also his flight.
Meeting Jim Casy

The Preacher's Influence
The Encounter
Tom meets Jim Casy, a former preacher, under a willow tree. Casy has abandoned organized religion and developed a philosophy of universal love. He speaks of the holiness of all people and the unity of mankind. Tom is intrigued but skeptical.
Casy's Ideas
Casy explains that sin and virtue are human constructs. He believes that the Holy Spirit is the human spirit. Tom listens, though he does not fully understand. The conversation plants a seed in Tom's mind.
The Bond
Tom and Casy travel together. Casy decides to join the Joad family. Tom respects Casy's honesty and intelligence. Their friendship becomes a spiritual mentorship. Casy's ideas will later shape Tom's actions.
Witnessing Injustice

The Education of Tom Joad
The Hooverville Incident
At the Hooverville, Tom sees a deputy sheriff harass migrants. He witnesses Floyd Knowles being framed and Jim Casy sacrificing himself. Tom is angry but restrained. He learns that the system is rigged against them.
The Strike
At the Hooper ranch, Tom sneaks out to find Casy among the strikers. He hears Casy's explanation of the strike and the need for collective action. Tom begins to understand the larger struggle.
Casy's Death
When Casy is killed, Tom's rage explodes. He kills the vigilante. This act transforms him from a passive observer to an active participant. He is now a fugitive, but he has found a cause.
Tom's Farewell to Ma

The Mission
The Decision to Leave
Tom tells Ma he must go to protect the family. He has become a wanted man. He plans to carry on Casy's work of organizing the poor. Ma gives him money and her blessing.
Tom's Vision
Tom shares his vision: he will be present wherever people fight for justice. He quotes Ecclesiastes about two being better than one. He says he will be in the cries of the hungry and the laughter of children. Ma does not fully understand, but she accepts.
The Departure
Tom leaves into the night. Ma returns to the family. Tom's transformation is complete. He has moved from individual survival to collective struggle. His spirit will guide the family even in his absence.
beginning of the novel
on the road home, early in the story
throughout the journey, especially at Hooverville and Hooper ranch
near the end of the story, in the brush cave