Final answer:
Boo Radley, a reclusive neighbor, scares Scout and Jem Finch on their way to the pageant in 'To Kill a Mockingbird'.
Step-by-step explanation:
In To Kill a Mockingbird, the Finch children, Scout and Jem, are scared on the way to the pageant by Boo Radley. Boo Radley, whose real name is Arthur Radley, is a reclusive neighbor who lives near the Finch family. Throughout the novel, Boo is a source of fear and fascination for the children; they have never seen him and share local rumors about his mysterious behavior. The night of the pageant sees the children walking through the dark and when someone follows and attacks them, it's Boo who ultimately comes to their rescue, subverting their fears and standing as a protective figure rather than one of dread.