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Amazon.com > Books > Literature & Fiction > Action & Adventure > Mystery, Thriller & Suspense > Mystery
The Forbidden Door: A Jane Hawk Novel
More product info
From Dean Koontz
This report was last updated 9/29/2018.
Refresh the report to view the most up-to-date data available:
Refresh the report to view the most up-to-date data available:
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Report Info:
Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Fail Overall Grade
FAIL
Suspicious Reviewers
![](/public/imgs/reviewmeta/su-icon.png)
FAIL
Reviewer Ease
![](/public/imgs/reviewmeta/sc-icon.png)
WARN
Rating Trend
![](/public/imgs/reviewmeta/rt-icon.png)
WARN
Unverified Purchases
![](/public/imgs/reviewmeta/vp-icon.png)
WARN
Incentivized Reviews
![](/public/imgs/reviewmeta/ic-icon.png)
WARN
Phrase Repetition
![](/public/imgs/reviewmeta/pr-icon.png)
PASS
Word Count Comparison
![](/public/imgs/reviewmeta/wc-icon.png)
PASS
Overlapping Review History
![](/public/imgs/reviewmeta/rh-icon.png)
PASS
Reviewer Participation
![](/public/imgs/reviewmeta/ex-icon.png)
PASS
Brand Repeats
![](/public/imgs/reviewmeta/re-icon.png)
PASS
Deleted Reviews
![](/public/imgs/reviewmeta/dl-icon.png)
Most Trusted Reviews
This was much better than the book prior in the ... [Go to full review]
Sep 27, 2018
100%
TRUST
TRUST
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Verified Purchaser
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Take-Back Reviewer (1 deleted Review; avg. rating: 5.0)
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Brand Repeater (2 of 11 reviews for this brand; avg rating: 2.5)
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Critical Reviewer (avg. rating: 3.5)
Least Trusted Reviews
My thanks to Netgalley and Random House Publishing/Ballentine for an ... [Go to full review]
Sep 11, 2018
0%
TRUST
TRUST
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Unverified Purchaser
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Created on a high volume day
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Admitted to receiving an incentive
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Contains repetitive phrases (
show)
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Brand Repeater (3 of 24 reviews for this brand; avg rating: 4.0)
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Critical Reviewer (avg. rating: 4.2)
Analysis Details
Fail
Suspicious Reviewers
![](/public/imgs/reviewmeta/su-icon.png)
Take-Back Reviewers
22 of the 176 reviewers have had at least one of their past reviews for another product deleted. This is an excessively large percentage of Take-Back Reviewers which may indicate unnatural reviews.
Fail
Reviewer Ease
![](/public/imgs/reviewmeta/sc-icon.png)
The ease score is the average rating for all reviews that a given reviewer submits. The average ease score for reviewers of this product is 4.5, while the average ease score for reviewers in this category is 4.2. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.
4.5 Product's Average Ease Score
4.2 Category's Average Ease Score
Read more about our Reviewer Ease test.
Warn
Rating Trend
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- 36%
- Created over 1 day
We counted 176 reviews for this product over the span of 17 days, an average of 10.4 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 22 or fewer reviews on any given day.
However, we see the following 1 day exceeding this threshold:In total, we found that 64 reviews were created on just 1 day. This is an excessively high number of reviews submitted on these high volume days.
Warn
Unverified Purchases
![](/public/imgs/reviewmeta/vp-icon.png)
120 of the 176 total reviews for this product are unverified purchases. While this is a higher percentage of unverified purchases than we'd expect to see, it does not appear to have a significant impact on the overall rating.
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.
Warn
Incentivized Reviews
![](/public/imgs/reviewmeta/ic-icon.png)
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
16 of the 176 total reviews for this product admitted to receiving a free or discounted product in exchange for a review. This is more than we would expect see; the presences of at least one incentivized review indicates that there may be more, since not all reviewers will disclose that they had received an incentive to post a review.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Warn
Phrase Repetition
![](/public/imgs/reviewmeta/pr-icon.png)
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.
Common Phrases in Reviews:
Show MoreShow Less
2 reviews
(4.5/5)
(4.5/5)
2 reviews
(4.5/5)
(4.5/5)
45 reviews
(4.6/5)
(4.6/5)
13 reviews
(4.2/5)
(4.2/5)
23 reviews
(4.4/5)
(4.4/5)
2 reviews
(4.5/5)
(4.5/5)
3 reviews
(4.3/5)
(4.3/5)
16 reviews
(4.5/5)
(4.5/5)
15 reviews
(4.5/5)
(4.5/5)
2 reviews
(4.5/5)
(4.5/5)
124 of the 176 total reviews for this product use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.
Pass
Word Count Comparison
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- 20%
- Have an overrepresented word count
In the graph above, we can see the distribution of review word counts for this product and the expected distribution for this category. We see the following 1 group with a statistically significant greater concentration than what we'd expect to see:In total, we found that 35 reviews (or 20%) are within an overrepresented word count group. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass
Overlapping Review History
![](/public/imgs/reviewmeta/rh-icon.png)
Reviewers of this product have ALSO reviewed the following products:
8% also reviewed:
The Girl on the Train: A Novel by Paula Hawkins
6% also reviewed:
Dragonfly in Amber: A Novel (Outlander) by Diana Gabaldon
6% also reviewed:
Doctor Sleep: A Novel by Stephen King
6% also reviewed:
Gone Girl: A Novel by Julia Whelan
6% also reviewed:
The Murderer's Daughter: A Novel by Jonathan Kellerman
6% also reviewed:
The Martian: Classroom Edition: A Novel by Andy Weir
56 of the 176 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.
Pass
Reviewer Participation
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- 0%
- From reviewers with an overrepresented participation
We didn't find any participation groups that had a statistically significant greater concentration than what we'd expect to see in this category.
Read more about our Reviewer Participation test.
Read more about our Reviewer Participation test.
Pass
Brand Repeats
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Brand Repeaters
9 of the 176 reviewers have reviewed other products for this brand. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass
Deleted Reviews
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- 0
- Reviews have been deleted
We have not discovered any deleted reviews for this product.
There are a few limitations to keep in mind regarding the Deleted Reviews test:
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.