The term "mystery novel" can be synonymous with many other words and phrases, including detective story, whodunit, crime fiction, thriller, suspense, and puzzle mystery. Each of these synonyms shares the same basic premise of a story that involves solving a complex mystery or crime, but some may place more emphasis on the detectives or investigators involved, while others may have a greater focus on danger and intrigue. Depending on your preferences as a reader, you may find one of these synonyms more appealing than others, but rest assured that each offers an exciting and engaging reading experience.