Intensity: A Novel

Intensity: A Novel

by Dean Koontz

4.3 (8,925)

4.3 stars from 8,925 reviews. One of the highest rated Thriller books we track.

383 pages~6.4 hr readPublished by headline book publishing ltdPublished 1985-01-01

$1.9980% off peak

Last checked: Jun 30, 2026

Price history: $0.99 $9.99

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Price range: $0.99 $9.99

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Fans of these authors will like this...

  • Stephen King
  • James Patterson
  • Tess Gerritsen

Fans of these books will like this...

  • The Silence of the Lambs
  • Shutter Island

Perfect for you if...

  • You love psychological thrillers where the protagonist has to outthink a dangerous predator in real time.
  • You're drawn to survival stories with a moral dimension beyond just staying alive.
  • You appreciate tense, propulsive narratives that move with genuine momentum and don't waste time on filler.

Maybe not for you if...

  • You prefer mysteries where you're gradually piecing together a puzzle with the detective.
  • You want graphic violence described in explicit detail.
  • You're looking for a philosophical deep dive into a killer's psychology rather than a cat-and-mouse chase.

About this book

Chyna Shepard, twenty-six, cannot sleep during her first night at her best friend's family home in Napa Valley. Her instinct proves correct when Edgler Foreman Vess, a murderous sociopath, enters the house with intent to kill everyone inside. Vess, who calls himself a "homicidal adventurer," lives to satisfy his appetites without fear, remorse, or limits. Chyna, a survivor hardened by lifelong struggles for safety and self-respect, becomes trapped in Vess's deadly orbit. Initially focused only on escaping alive, she discovers by chance the identity of Vess's next intended victim—an innocent person she alone can save. Driven by a newly discovered need for meaning beyond survival, Chyna draws on her inner resources to protect an endangered girl while the threat from Edgler Foreman Vess intensifies moment by moment.

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Price History

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

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Free$5.00$9.99Apr '20Jun '23Aug '24Jun '26
$0.99$9.99

Currently on sale at $1.99 — 80% off peak. Price has dropped 10 times over the last 6 years. Goes on sale roughly every 167 days. Typically stays discounted for 18 days.

Sales Rank

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

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#1,258#55,339#109,420Apr '18Jan '24Nov '25Jun '26

Currently #1,258 in the Kindle store — a top-10K bestseller.

Rating & Reviews

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

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3.5★4.3★5.0★May '23Jan '24Aug '24Aug '25RatingReviews

Currently 4.3★ from 8,925 reviews

Gaining approximately 57 new reviews per month. Steady word of mouth growth. Rating has remained stable at 4.3 over the tracking period.

Sale Prediction

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Free$5.00$9.99Apr '20Jun '23Aug '24Jun '26PredictedJun '26

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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Dean Koontz

1 book on Vagrant Press

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