This question is about “The Curse of the Poisoned Pretzel” by Paul Haven
Answer and Explanation:
To make it look like Skidmore poisoned his own brother, the author shows how Skidmore hated his brother and hated him for silly and superfluous things, like thinking that his brother was provoking him by chewing gum while he was allergic. The author reinforces the enmity between them, but states that everyone loved Skidmore's brother, making the reader suspicious of anyone for poisoning, except Skidmore.