To Kill a Mockingbird

The film's young protagonists, Jean Louise "Scout" Finch (Mary Badham) and her brother Jeremy Atticus "Jem" Finch (Phillip Alford), live in the fictional town of Maycomb, Alabama, during the early 1930s. The story covers three years, during which Scout and Jem undergo changes in their lives. They begin as innocent children, who spend their days happily playing games with each other and spying on Arthur "Boo" Radley (Robert Duvall), who has not been seen for many years by anybody as a result of never leaving his house and about whom many rumors circulate. Their widowed father, Atticus (Gregory Peck), is a town lawyer and has a strong belief that all people are to be treated fairly, to turn the other cheek, and to stand for what you believe. He also allows his children to call him by his first name. Early in the film, the children see their father accept hickory nuts, and other produce, from Mr. Cunningham (Crahan Denton) for legal work because the client has no money.[3] Through their father's work as a lawyer, Scout and Jem begin to learn of the racism and evil in their town, aggravated by poverty; they mature quickly as they are exposed to it.
The local judge (Paul Fix) appoints Atticus to defend a black man, Tom Robinson (Brock Peters), against an accusation of rape of a white girl, Mayella Ewell (Collin Wilcox). Atticus accepts the case. Jem and Scout experience schoolyard taunts for their father's decision. Later, as Atticus is sitting in front of the local jail to safeguard Tom Robinson, he faces the arrival of a lynch mob, which includes Mr. Cunningham. Scout, Jem and their friend, Dill (John Megna), interrupt the confrontation. Scout, unaware of the mob's purpose, recognizes Cunningham as the man who paid her father in hickory nuts and tells him to say hello to his son, who is her schoolmate. Cunningham becomes embarrassed and the mob disperses.
At the trial it is undisputed that Tom came to Mayella's home at her request to help with the chopping up of a chifforobe, and that Mayella showed signs of having been beaten around that time. Among Atticus' chief arguments, he points out that Tom is crippled in his left arm, and that the supposed rapist would have had to make extensive use of his left hand in assaulting Mayella before raping her. At the same time Atticus demonstrates that Mayella's father, Bob Ewell (James Anderson), is left handed, implying that he â rather than Tom â was the one who beat Mayella. Atticus also states that the girl had not even been examined by a doctor to check for signs of rape after the supposed assault. In his closing argument Atticus asks the all white, male jury to cast aside their prejudices and instead focus on Tom's obvious innocence. In taking the stand in his own defense, Tom denies he attacked Mayella, but states she kissed him. He testifies he voluntarily assisted Mayella because "I felt sorry for her because . . . ". He didn't finish the sentence but the prosecutor (William Windom) hammered home the point that he was a black man feeling sorry for a white woman. In a town where whites are viewed as superior to blacks, Tom's sympathy for Mayella dooms his case, and he's found guilty.
Atticus arrives home to discover from Sheriff Heck Tate (Frank Overton) that Tom has been killed by a deputy during his transfer to prison. The sheriff states that according to this deputy, Tom was trying to escape. The deputy reported that Tom ran like a "crazy" man before he was shot. Atticus and Jem go to the Robinson family home to advise them of Tom's death. Bob Ewell, Mayella's father, appears and spits in Atticus' face while Jem waits in the car. Atticus wipes his face and leaves.
Autumn arrives, and Scout and Jem attend a nighttime Halloween pageant at their school. Scout wears a large hard-shelled ham costume, portraying one of Maycomb county's products. At some point during the pageant, Scout's dress and shoes are misplaced. She's forced to walk home without shoes and wearing her ham costume. While cutting through the woods, Scout and Jem are attacked by an unidentified man who has been following them. Scout's costume, like an awkward suit of armor, protects her from the attack but restricts her movement and severely restricts her vision. Their attacker is thwarted and overcome by another unidentified man. Jem is knocked unconscious and Scout escapes unharmed in a brief but violent struggle. Scout escapes her costume in time to see a man carrying Jem to their home and entering. Scout follows and once inside runs into the arms of a concerned Atticus. Doc Reynolds comes over and treats the broken arm of an unconscious Jem.
When Sheriff Tate asks Scout what happened, she sees a man standing quietly in the corner behind the door of Jem's room. Atticus formally introduces Scout to Arthur Radley, whom she has known as Boo, the man who came to the aid of Jem and Scout against Bob Ewell in the woods, and who carried Jem to his home. The sheriff reports that Ewell was discovered dead at the scene of the attack with a knife in his ribs. Atticus assumes that Jem killed Ewell in self-defense. Sheriff Tate, however, believes that Boo killed Ewell in defense of the children, and he tells Atticus that to drag the shy and reserved Boo into the spotlight for his heroism would be "a sin". To protect Boo, Sheriff Tate suggests that Ewell "fell on his knife". Scout draws a startlingly precocious analogy to an earlier lesson from the film (hence its title) when she likens unwelcome public attention to Boo to the killing of a mockingbird. The film ends with Scout considering events from Boo's point of view and with Atticus watching over the unconscious Jem.

Question: Whose story was the movie based on
Answer: To Kill a Mockingbird by Harper Lee