The broader Mystery category is a high-volume, fast-moving market with ~365k titles and strong daily sales velocity at the top, but the STC ratio of 1.05 signals fierce competition for shelf space. The mystery-romance and suspense-romance keyword cluster is rising steadily and shows no saturation warning flags, making romantic subplots the single clearest demand signal in the subgenre right now. Pure cozy and generic murder-mystery keywords still move volume but carry competition warnings, suggesting a crowded supply side. KU share in adjacent Crime Fiction sits at 53%, confirming a read-in-subscription audience that rewards series writers over standalone titles.
7 ranked elements, 5 comp titles, 4 market gaps identified — unlock to see the full Map.
7 elements ranked by demand vs. supply…
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