Not necessarily. Mystery novels could also focus on solving crimes, while horror novels focused on creating a scary atmosphere and setting up the plot. Therefore, he had to judge based on the plot of the specific novel. If you want to read some novels that have both suspense and horror elements, I can recommend " The Queen of the Lost City of the Western Regions,"" The Gate of Heaven," and " The Speaker of Death " to you. These novels are full of suspense and horror elements, making people laugh in horror. I believe they will give you a very good reading experience.😋I hope you will like my recommendation.😗