
Deep Dark (Tracers Series Book 10)
4.5 stars from 1,360 reviews. Top 86% of Romance books we track.
Last checked: May 4, 2026
Full price — consider adding to your watchlist for a better deal.
Price range: $6.99 – $9.99
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Fans of these authors will like this...
- Tess Gerritsen
- Iris Johansen
- Allison Brennan
Fans of these books will like this...
- The Bone Collector
- The Girl with the Dragon Tattoo
- Killer Instinct
Perfect for you if...
- You love crime procedurals with real chemistry between leads, where the romance matters as much as the murder plot.
- You're drawn to protagonists with messy pasts who have to choose between self-protection and trusting someone.
- You want a thriller that doesn't skimp on either the detective work or the emotional stakes.
Maybe not for you if...
- You prefer standalone novels; this is book 10 in a series and assumes familiarity with the Delphi Center universe.
- You're looking for a light romantic read; this blends dark crime scenes with psychological tension throughout.
- You need graphically explicit content; Griffin focuses on threat and implication over graphic violence.
About this book
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Price History
Kindle price over time. Green zones = periods when the book was free.
Currently on sale at $1.99 — 80% off peak. Price has dropped 1 time over the last 6 years. Typically stays discounted for 820 days.
Sales Rank
Amazon sales rank: lower number = better selling book. #1 is the bestseller.
Currently #9,825 in the Kindle store — a top-10K bestseller.
Rating & Reviews
Purple line = star rating over time. Blue area = total review count growth.
Currently 4.5★ from 1,360 reviews
Gaining approximately 7 new reviews per month. Rating has remained stable at 4.5 over the tracking period.
Sale Prediction
Actual Predicted
This book is currently discounted at $1.99. It typically returns to around $9.99.
Prices shown in USD from Amazon US. We continuously pull new data to improve tracking. If dates look old, it usually means there has been no significant change since the last data point.
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