Because Radley is much older than them, and Scout, Jim, and Dill find him interesting because of this.
In Breaking Dawn Edward tells Jacob the he can kill him if Bella dies seeing as he doesn't want to live without Bella.
At first Jacob agrees however later on, once they believe Bella to be dead, Jacob says he will not kill Edward as he wants him to suffer.
Answer:
i thinkk the story would have to persuade the reader wanting to read more to find out what will happen next