Why they might:
* Setting the Mood: Figurative language (metaphors, similes, personification, etc.) can create atmosphere, suspense, and intrigue.
* Character Development: Figurative language can reveal a character's personality, thoughts, and inner world.
* Adding Vividness: It brings scenes to life and makes them more memorable.
* Creating Literary Effect: Some authors use figurative language to elevate their writing and create a more sophisticated style.
Why they might not:
* Genre Conventions: Some detective novels prioritize hard-boiled, gritty realism, where excessive figurative language might seem out of place.
* Focus on Plot: The emphasis might be on the puzzle, the investigation, and the logic of the story, rather than artistic flourishes.
* Author's Style: Some authors simply prefer a more straightforward, minimalist style.
In Conclusion:
While figurative language is often employed in detective novels, it's not a hard-and-fast rule. It depends on the author's individual style, the tone of the novel, and the specific goals they are trying to achieve.