Detective, suspense, and reasoning are all common elements in novels, but there are some differences between them. A detective is usually responsible for investigating the truth of a crime by collecting evidence, analyzing clues, and investigating the truth to find the criminal. In novels, detectives often play the leading role. They have unique abilities and wisdom to solve all kinds of complicated cases. Suspense was usually based on a suspense event. The reader needed to guess, reason, and observe to unravel the truth of the event. Suspense novels usually have a fascinating plot and multiple characters. The readers can analyze the events from different angles. Inference was a more in-depth intellectual game that required the reader to solve the puzzle through logical thinking and analysis. Mystery novels often involve complex mathematical, physical, or philosophical problems that require the reader to use their own wisdom and knowledge to make inferences. Therefore, although detective, suspense, and reasoning were all elements of the novel, their forms of expression and theme were different. Detective novels usually focus on the plot and characters, while mystery novels focus more on letting the reader guess and reason, while mystery novels focus more on in-depth logical analysis and thinking.