The Shark (Forgotten Files Book 1)

The Shark (Forgotten Files Book 1)

by Mary Burton

4.4 (17,117)

4.4 stars from 17,117 reviews. One of the highest rated Mystery Thriller books we track.


$1.99KU50% off peak

Last checked: May 18, 2026

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Price history: $0.99 $3.99

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Fans of these authors will like this...

  • Tess Gerritsen
  • Lisa Gardner
  • Kendra Elliot

Fans of these books will like this...

  • The Whisper Man
  • The Girl on the Train
  • Before She Knew Him

Perfect for you if...

  • You love psychological thrillers where the protagonist's past collides with present danger in ways they can't yet understand.
  • You're drawn to crime fiction with law enforcement leads who have personal stakes in solving the case.
  • You enjoy fast-paced mysteries where amnesia and fragmented memories drive the tension forward.

Maybe not for you if...

  • You prefer standalone thrillers without series baggage, as this is book one of a longer arc.
  • You're sensitive to content involving violence against minors or sexual trafficking themes.
  • You want literary subtlety over plot-driven momentum and twists.

About this book

Virginia state trooper Riley Tatum discovers a connection to her past when she arrives at the murder scene of a teen prostitute. Years earlier, as a teenage runaway, Riley was kidnapped and drugged, left unconscious on the streets with no memory of the incident—only fragmented recurring dreams of two men playing cards. Clay Bowman, a former FBI agent and Riley's former romantic partner, now works for Shield Security. He has been investigating an unsolved case involving a serial killer known as the Shark, who murdered girls as part of a sadistic poker game. One victim survived. Clay begins to suspect that Riley is the girl who escaped the Shark's crimes, and that the killer is now targeting her to complete his deadly game. As the Shark prepares to strike again, Riley and Clay must work to stop him before he claims the one victim who escaped.

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Price History

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

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Free$2.00$3.99Mar '21Oct '22Jul '24May '26
$0.99$3.99

Currently on sale at $1.99 — 50% off peak. Price has dropped 20 times over the last 5 years. Goes on sale roughly every 99 days.

Sales Rank

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

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#445#23,622#46,799Apr '18Apr '22Oct '23May '26

Currently around #14K in the Kindle store — a steady mid-list seller. Sales have softened 46% recently.

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 '23Jul '23Dec '23Mar '26RatingReviews

Currently 4.4★ from 17,117 reviews

Gaining approximately 72 new reviews per month. Steady word of mouth growth. Rating has remained stable at 4.4 over the tracking period.

Sale Prediction

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Free$2.00$3.99Mar '21Oct '22Jul '24May '26PredictedMay '26

Actual Predicted

This book is currently discounted at $1.99. It typically returns to around $3.99.

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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Mary Burton

1 book on Vagrant Press

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