I will provide answers for Chapters 1-18.
Chapter One: There are three main problems in this chapter. The first one involves Roy's relationship with Dana Matherson, the school bully. The second one involves the vandalism at the construction site of a future Mother Paula's Pancake House. The third one involves the unknown identity of the running boy. The author presents answers to these problems in later chapters.
Chapter Two: In this chapter, the main problem involves Roy and Ms. Viola Hennepin's conflicting perceptions of self-defense. The conflict is resolved temporarily, with Roy suspended from the school bus for two weeks and required to write a letter of apology to Dana. A minor problem in this chapter involves the unknown identity of the tall girl with the red-framed glasses.
Chapter Three: In this chapter, a major problem is the lack of leads the police department in Coconut Cove have in their pursuit of the vandal suspects. A minor problem involves Mr. and Mrs. Eberhardt's disagreement on how Roy should craft his letter of apology to Dana. The vandals are not found in this chapter, but Roy's father supports Roy's tone in his letter to Dana.
Chapter Four: In this chapter, the main problem is the occurrence of more vandalism at the construction site under Officer Delinko's watch. However, the tall girl with red glasses is revealed as one Beatrice Leep, a soccer player.
Chapter Five: In this chapter, the main problem involves the identity of the running boy and his connection to the recent events at the construction site. Roy discovers a bag full of cottonmouth snakes at the boy's campsite but does not know why they are there. The mystery is only partly solved in this chapter: We discover that the running boy is nicknamed Mullet Fingers, but we don't know how he is relevant to the story.
Chapter Six: In this chapter, the main problems involve Officer Delinko's incompetence on the job and Beatrice's connection to Mullet Fingers. Because Officer Delinko fell asleep during his shift at the construction site, the police chief confines him to desk duty for a month. Meanwhile, Roy's efforts to track down Mullet Fingers and to figure out his connection to Beatrice fail.
Chapter Seven: In this chapter, the main problem still involves the recent acts of vandalism at the construction site. Meanwhile, the mystery surrounding Beatrice's connection to Mullet Fingers is solved when Beatrice confesses to Roy that Mullet Fingers is her step-brother.
Chapter Eight: In this chapter, the main problem continues to revolve around the vandalism incidents at the construction site. By orders of Chuck Muckle, the Vice-President of Corporate Relations, Curly (the foreman) hires a dog trainer's four Rottweilers to protect the site. This short-term solution partially solves the problem, but the identity of the vandals is still a mystery. Meanwhile, there is an indication that the conflict between Roy and Dana will soon be resolved.
Chapter Nine: In this chapter, the main problems involve continued acts of vandalism at the construction site (someone released poisonous snakes inside the chain-link fence, spooking the Rottweilers) and Roy suffering continued assaults from Dana.
Chapter Ten: In this chapter, two problems are solved, one temporarily. Beatrice pulls Dana off Roy in the janitor's closet, strips Dana to his underwear, and proceeds to tie him to a flag pole on the school grounds. Essentially, Beatrice becomes Roy's protector. In another development, we discover how Mullet Fingers is relevant to the story. He is revealed to be responsible for the acts of sabotage, in efforts to save the burrowing owls from being decimated by continued development at the construction site.
Chapter Eleven: In this chapter, the main problem revolves around the difficulty of catching the vandal. As a solution, Curly decides to spend the night in a trailer on the grounds of the construction site.
Chapter Twelve: In this chapter, the main problem involves how Mullet Fingers will treat the injuries he sustains after he gets bitten by one of the Rottweilers. Beatrice and Roy accompany Mullet Fingers to the emergency room, but he later escapes.
Chapter Thirteen: In this chapter, the main problem revolves around Roy and his parents' conflicting views about saving the owls at the construction site. In the end, the conflict is resolved with Roy's parents voicing confidence in his judgment about the matter.
Chapter Fourteen: In this chapter, the main problems are Dana's continued assaults on Roy and Mullet Finger's ultimatum for Roy. Mullet Fingers refuses to divulge his immediate plans for further acts of sabotage at the construction site; instead, he challenges Roy to join him. For the first problem, Roy tries to negotiate with Dana, but to no avail. For the second, although the author doesn't reveal Roy's decision about joining Mullet Fingers in his exploits, we suspect that Roy won't stop his friend.
Chapter Fifteen: In this chapter, the main problem revolves around how Roy will support his friend in his endeavors. Roy decides against joining Mullet Fingers in his plans for further sabotage; however, he manages to come up with an ingenious plan to protect his friend. Roy lures Dana to Curly's trailer with a lie that a stash of cigarettes waits for him there. Dana enters Curly's trailer and is attacked by Curly. By the end of the chapter, Dana is arrested by Officer Delinko, as the officer and Curly remain convinced that Dana is the vandal.
Chapter Sixteen: In this chapter, the main problem rests on how Roy will help to save the owls. In the meantime, the problem of Dana's bullying is resolved: Dana will be in prison for a while, due to his actions at the construction site. Roy checks up on Mother Paula's construction permits and teams up with Beatrice to help Mullet Fingers save the owls.
Chapter Seventeen: In this chapter, the main problem is how the police will catch the actual perpetrator of the acts of sabotage. For political purposes, Dana becomes the official culprit, while Officer Delinko is assigned to investigative work.
Chapter Eighteen: In this chapter, the problem revolves around how Roy will stop Mother Paula from continuing the construction project. As a solution, Roy enlists the help of his classmates and teacher, Mr. Ryan. He informs them that the owls are an endangered species and that it is illegal for Mother Paula to be building on the site.