Mystery — Kindle Category Opportunity
Competition snapshot for the Mystery, Thriller & Suspense best-seller list, ease-of-entry score 41.0/100.
Category metrics
Score
41.0
Median reviews
5,695
Weak share (top 20)
20%
Median price
$4.99
Median star rating
4.5
Books scanned
50
Worth writing in?
Mystery is between the extremes: 20% of the top 20 is under 100 reviews against a median of 5695, so entry depends on the specific sub-genre and your launch strength. Read the breakout books below before judging. Ease-of-entry score 41.0/100.
Breakout books — top 15, under 100 reviews, $0.99–4.99
Best-seller list on Amazon| # | Title | Star | Reviews | Price |
|---|---|---|---|---|
| 12 | To His Ex-Wife: A gripping, heart-racing psychological thriller (The Stone Family Book 2) | 4.2 | 55 | $4.99 |
High-frequency phrases in this category's titles
Mine all categoriesHigh-frequency phrases mined from the 50 best-seller titles on this category's list. The ease-of-entry score tells you how winnable the category is; these title phrases tell you which words readers search with — use the two layers together. Frequency is a title statistic, not a search-volume estimate.
| Phrase | Titles | Rank-weighted score |
|---|---|---|
| psychological thriller | 5 | 154 |
| split second | 2 | 83 |
Sign in and click any phrase to send it straight to the keyword competition lookup.
More Mystery, Thriller & Suspense categories
11 subcategories under this category
| Subcategory | Score | Median reviews |
|---|---|---|
| █████ | 45.5 | 2491.5 |
| █████ | 41.0 | 4238.5 |
| █████ | 38.5 | 1380 |
| █████ | 36.0 | 1780 |
| █████ | 35.0 | 8128.5 |
| █████ | 35.0 | 11465.5 |
| █████ | 35.0 | 8530 |
| █████ | 33.5 | 10702.5 |
| █████ | 13.0 | 1245 |
| █████ | 12.0 | 2103.5 |
| █████ | 0.0 | 4044 |
Subcategory names are visible after sign-in — a free account unlocks every subcategory score.
Sign up free to unlockCheck the keywords before you write
Category scores show where entry is easiest; keyword lookups show whether readers actually reach for it. A free account includes keyword competition lookups plus unlimited category scans.
After you publish: why aren't readers buying?
Category research picks the direction; review diagnosis reads the readers. The same platform clusters a book's critical reviews into severity-ranked root causes, each anchored to verbatim quotes — see it applied to a full narrative-history title.
Keep researching with the free tools
Research snapshot scanned on Oct 19, 2026. Refreshed periodically — not live tracking.