What is the climax of The Witch of Blackbird Pond?

The climax, the most intense point of the story, occurs in Chapter Nineteen. Witnesses come forth at Kit's trial to testify against her. Kit protects Prudence by saying she wrote Prudence's name over and over because Prudence's parents never knew she was being taught at Hannah's house. Nat then comes into court with Prudence, who shows all how Kit taught her to read and write. Prudence's father is so proud of her that he stands up to his wife and drops all of the charges against Kit.