Three, Imperfect Number

Three, Imperfect Number

by Rinaldi, Patrizia

4.0 (12)
232 pages~3.9 hr readPublished by Europa Editions

$9.99Near peak price

Last checked: Apr 19, 2026

Hidden GemHighly rated but flying under the radar. Fewer readers have found this one yet.
Price history: $0.50 $11.59

While not the biggest discount we've seen for this book, it's still a great deal and we recommend grabbing it before price returns to its normal range.

Price range: $0.50 $11.59

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Fans of these authors will like this...

  • Donna Leon
  • Andrea Camilleri
  • Tess Gerritsen

Fans of these books will like this...

  • The Commissario Montalbano series
  • Cormoran Strike series

Perfect for you if...

  • You want a crime thriller with an unconventional detective whose disability is central to her genius, not a plot device.
  • You appreciate European noir that values atmosphere and psychology over gore.
  • You're drawn to stories where the protagonist's difference becomes their greatest investigative advantage.

Maybe not for you if...

  • You prefer fast-paced procedurals with clear forensic leads and rapid plot momentum.
  • You need a large cast of fully developed characters; this is a focused ensemble piece.
  • You want explicit violence and graphic crime scenes rather than psychological tension.

About this book

A blind woman leads her Naples police colleagues through a murder investigation in this crime thriller. Commissario Martusciello receives reports of two bodies: singer Jerry Vialdi, also known as Gennaro Mangiavento, found at the Naples football stadium, and an unidentified woman discovered at the Bentegodi Stadium in Verona, hundreds of miles away. Both bodies are positioned in a fetal pose with no signs of physical violence, suggesting a deliberate method concealing a hidden secret. The killer appears to be issuing a challenge to police who have no clear leads. Superintendent Blanca Occhiuzzi, blind from birth, perceives the world through four senses and can detect fear, guilt, and innocence in people. She guides Martusciello through the investigation, helping him understand the mind of the murderer.

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Price History

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

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Free$5.79$11.59Jun '20Sep '23Jun '24Apr '26
$0.50$11.59

Price has dropped 26 times over the last 6 years. Goes on sale roughly every 81 days. Typically stays discounted for 29 days.

Sales Rank

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

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#199,053#1,814,093#3,429,133Jul '19Sep '23Jun '24Mar '26

Currently around #293K in the Kindle store — a niche title. Sales have softened 42% recently.

Rating & Reviews

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

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3.0★4.0★5.0★Aug '24Jan '26RatingReviews

Currently 4.0★ from 12 reviews

Review activity has been quiet recently. Rating has dipped slightly from 3.9 to 3.8.

Sale Prediction

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Free$5.79$11.59Jun '20Sep '23Jun '24Apr '26PredictedApr '26

Actual Predicted

This book goes on sale roughly every 81 days. Next drop estimated in about 4 weeks. Typical discount: 96% off.

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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Rinaldi, Patrizia

1 book on Vagrant Press

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