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From Harlan Coben
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Top products in Thrillers & Suspense with authentic reviews:
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Most Trusted Reviews
TRUST
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Unverified Purchaser
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Easy Grader (avg. rating: 4.5)
Least Trusted Reviews
TRUST
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Verified Purchaser
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Created on a high volume day
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Overrepresented word count (24 words)
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Contains repetitive phrases (
show)
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Take-Back Reviewer (1 deleted Review; avg. rating: 5.0)
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Brand Repeater (2 of 12 reviews for this brand; avg rating: 4.5)
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Overrepresented Participation (posted 12 Reviews)
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Easy Grader (avg. rating: 4.6)
Analysis Details

We discovered a total of 33 deleted Reviews for this product, with an average rating of 4.7. Even though deleted reviews don't affect the average rating, the fact that action was taken to delete reviews raises some red flags about the integrity of the reviews for the product as whole.
There are a few limitations to keep in mind regarding the Deleted Reviews test:
- We don't have a magic ability to collect every single deleted review; we can only identify reviews as deleted if we collect them on one date and then notice they are no longer visible on a subsequent date.
- We have no information on reviews that were never published in the first place.
- We also don't know why these reviews were removed. It could be action from the platform, personal decision by the review author, part of an entire account closure, even some data error on our part, etc.

Brand Repeaters
Approximately 40% of reviewers have reviewed other products for this brand. While this is more Brand Repeaters than we'd expect to see, the discrepancy in ratings between the Brand Repeaters and non-repeaters isn't significant enough to rule out the possibility of it being due to random chance.
Brand Loyalists
Less than approximately 10% of reviewers have reviewed multiple products but half or more of their reviews are for this brand. This is an excessively large percentage of Brand Loyalists which may indicate unnatural reviews.
Brand Monogamists
Less than approximately 10% of reviewers have reviewed multiple products, but only for this brand. This is an excessively large percentage of Brand Monogamists which may indicate unnatural reviews.

Take-Back Reviewers
Approximately 40% of reviewers have had at least one of their past reviews for another product deleted. While this is more Take-Back Reviewers than we'd expect to see, it does not appear to have a significant impact on the overall rating.

Read more about our Rating Trend test.

699 of the 5,675 total reviews for this product are unverified purchases. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Unverified purchases may be the result of Kindle Unlimited readers, buyers who didn't pay full price, or reviewers who did not purchase the product at Amazon. Read more about our Unverified Purchases test.

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- <10%
- Have an overrepresented word count
Read more about our Word Count Comparison test.

(5.0/5)
(5.0/5)
(4.6/5)
(3.5/5)
(3.0/5)
(4.6/5)
(4.5/5)
(5.0/5)
(5.0/5)
(5.0/5)
(5.0/5)
Approximately 15% of reviews use substantial repetitive phrases between them. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

<10% also reviewed:
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<10% also reviewed:
The Wrong Side of Goodbye: Harry Bosch, Book 19 by Michael Connelly
<10% also reviewed:
Never Go Back (Jack Reacher) by Child, Lee
<10% also reviewed:
Nose Vents Air Purifier Filter Stop Snore - Anti... by XIANGXIHUI
<10% also reviewed:
The Black Widow by Wendy Corsi Staub
<10% also reviewed:
The Whistler by John Grisham
<10% also reviewed:
The Last Mile (Memory Man series) by David Baldacci
<10% also reviewed:
Gone Girl: A Novel by Julia Whelan
<10% also reviewed:
The Fix (Memory Man series Book 3) by David Baldacci
Approximately 30% of reviewers have substantial overlapping product review history. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

4.3 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.

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- <10%
- Admitted to receiving an incentive
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.