In Chapter 25 of To Kill a Mockingbird, Scout relates the ride that Atticus and Calpurnia took to the Robinsons with Jem and Dill in the back seat of the car. From Dill Scout has learned that Atticus went to the house and when Helen Robinson learns why Atticus has come she "just fell down in the dirt....like a giant with a big foot just came along along and stepped on her." Then, to add to the horrifying moment, the Ewells "hollered at" Atticus and the boys as the drove past.
Certainly, an atmosphere of foreboding is created by the animosity of the perpetrators of evil, the Ewells. And, Bob Ewell's cruel and callous remark, as related by Miss Stephanie, of "one down and about two more to go" is, indeed, troublesome. While Jem has told Scout that Bob Ewell is more "hot gas than anything," Scout becomes apprehensive, but Jem threatens her not to say anything to Atticus.