The Enigma Strain: A Fast-Paced Action Thriller (Harvey Bennett Thrillers Book 1)

Name: The Enigma Strain: A Fast-Paced Action Thriller (Harvey Bennett Thrillers Book 1)
Availability: InStock
Rating: 4.1 (9337 reviews)
Author: Nick Thacker

by Nick Thacker

Thriller Science Fiction

4.1 (9,337)

4.1 stars from 9,337 reviews. One of the highest rated Thriller books we track.

417 pages~7 hr readPublished by Turtleshell PressPublished 2014-01-01

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Last checked: Jun 15, 2026

Price history: Free – $6.99

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Perfect for you if...

You want a thriller that moves fast with genuine high stakes, not just manufactured tension.
You enjoy conspiracy plots grounded in real locations and scientific concepts that feel plausible.
You like protagonists who aren't superheroes but get resourceful when cornered.

Maybe not for you if...

You prefer character-driven narratives where internal conflict matters as much as external danger.
You're looking for literary depth or complex moral ambiguity in your thrillers.
You want a standalone novel rather than a series commitment.

About this book

An explosion at Yellowstone is followed by the emergence of a strange disease and the threat of a supervolcano eruption—none of which occurred by accident. A reclusive park ranger is drawn into action alongside a woman from the CDC. Harvey Bennett is not a trained killer, but he is determined to fight for what is right and stop the terrorists responsible for the attack. Harvey and Juliette must survive as they travel across the American landscape to prevent catastrophe. This first book in the Harvey Bennett Thrillers series combines action-adventure with elements of conspiracy, medical thriller, and virus-based post-apocalyptic themes.

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Price History

Kindle price over time. Green zones = periods when the book was free.

Free – $6.99

Currently free. Price has dropped 18 times over the last 5 years. Goes on sale roughly every 95 days. Typically stays discounted for 31 days.

Sales Rank

Amazon sales rank: lower number = better selling book. #1 is the bestseller.

Currently around #204K in the Kindle store — a niche title. Sales have softened 51% recently.

Rating & Reviews

Purple line = star rating over time. Blue area = total review count growth.

Currently 4.1★ from 9,337 reviews

Gaining approximately 43 new reviews per month. Steady word of mouth growth. Rating has remained stable at 4.1 over the tracking period.

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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.