Final answer:
Chapter 15 of 'To Kill a Mockingbird' focuses on Atticus Finch's protection of Tom Robinson from a mob at the jailhouse, and Scout's innocence plays a pivotal role in defusing a dangerous situation.
Step-by-step explanation:
In Chapter 15 of To Kill a Mockingbird, Atticus Finch is visited at home by a group of men from the town concerned about Tom Robinson, who is in the local jail awaiting trial for the accusation of raping a white woman. Despite the tension, Atticus remains firm in his commitment to defend Tom. Later, Atticus spends the night outside the jailhouse to protect Tom from a lynch mob. Scout, Jem, and Dill sneak out of the house and join him, and Scout's innocent conversation with Mr. Cunningham defuses the situation, causing the mob to disperse.