The Tainted Cup (Ana and Din Mysteries Book 1)

The Tainted Cup (Ana and Din Mysteries Book 1)

by Robert Jackson Bennett

4.5 (13,864)

4.5 stars from 13,864 reviews. One of the highest rated Mystery Thriller books we track.

432 pages~7.2 hr readPublished by Random House WorldsPublished 2024-01-01

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Last checked: Jun 23, 2026

Price history: $1.99 $13.99

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Fans of these authors will like this...

  • T. J. Klune
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Fans of these books will like this...

  • The Seven Deaths of Evelyn Hardcastle
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Perfect for you if...

  • You love locked-room mysteries and want the intellectual satisfaction of watching a brilliant detective outsmart everyone else in the room.
  • You enjoy fantasy worldbuilding that feels lived-in and strange without overshadowing the actual plot.
  • You appreciate banter between mismatched partners who irritate and respect each other in equal measure.

Maybe not for you if...

  • You prefer straightforward, linear storytelling without the need to track multiple layers of conspiracy and magic system logic.
  • You want your detective stories grounded in the real world rather than mixed with dark fantasy elements.
  • You dislike unreliable narrators or protagonists who keep crucial information hidden from both their partner and the reader.

About this book

In Daretana's greatest mansion, a high imperial officer is found dead—apparently killed when a tree erupted from his body. Even at the Empire's borders, where contagions and leviathan blood produce strange magical effects, this death is both terrifying and impossible. Assigned to investigate is Ana Dolabra, a detective known for brilliance and eccentricity. She wears a blindfold at all times and has a reputation for solving impossible cases without leaving her home. Her new assistant, Dinios Kol, is magically altered to complement her abilities. Din finds Ana both infuriating and remarkable as he watches her make startling deductions. As the two pursue a mastermind and uncover a scheme threatening the Empire itself, Din begins to realize how little he understands about Ana Dolabra—and worries about keeping his own secrets from her piercing intellect. The Tainted Cup combines detective fiction with world-building to deliver a mystery that blends familiar elements with new invention.

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Price History

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

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Free$7.00$13.99May '23Dec '24Aug '25Nov '25
$1.99$13.99

Currently on sale at $1.99 — 86% off peak. Price has dropped 7 times over the last 3 years. Goes on sale roughly every 118 days.

Sales Rank

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

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#159#298,435#596,710May '23Apr '24Aug '25Jun '26

Currently #3,693 in the Kindle store — a top-10K bestseller. Climbing the charts — 53% improvement recently.

Rating & Reviews

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3.5★4.3★5.0★Feb '24Aug '24Nov '25Jun '26RatingReviews

Currently 4.5★ from 13,864 reviews

Gaining approximately 480 new reviews per month. Reader interest is accelerating. Rating has climbed from 4.2 to 4.6. Recent readers are rating it higher.

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Free$7.00$13.99May '23Dec '24Aug '25Nov '25PredictedJun '26

Actual Predicted

This book is currently discounted at $1.99. It typically returns to around $13.99.

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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Robert Jackson Bennett

1 book on Vagrant Press

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