Tide of Shadows (The Gus Harper K9 Thrillers Book 1)

Name: Tide of Shadows (The Gus Harper K9 Thrillers Book 1)
Availability: InStock
Rating: 4.2 (371 reviews)
Author: P T Leonard

by P T Leonard

Contemporary Fiction Thriller

4.2 (371)

4.2 stars from 371 reviews

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Last checked: Jun 24, 2026

Price history: $0.99 – $5.99

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Fans of these authors will like this...

Lee Child
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Fans of these books will like this...

The Midnight Library
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Perfect for you if...

You love thrillers with animal companions at the centre. Arty isn't decoration. he's integral to both the action and the emotional core.
You're drawn to character-driven stories where the cast feels like a real found family. The Cardinal, the widow, the former SEAL. all matter.
You want high-stakes action grounded in a vivid sense of place. Malta's beauty contrasts with the darkness beneath, and that tension fuels the plot.

Maybe not for you if...

You prefer fast-paced thrillers that skip character development. This one lingers with its people, which some readers find slow.
You're uncomfortable with human trafficking as a central plot element. The book doesn't exploit it, but it's the core premise.
You dislike stories where animals are in genuine danger. Arty faces real peril, and the book doesn't pull punches about it.

About this book

Gus Harper, a military veteran, seeks a quiet life on the water with Arty, his retired war dog. When they rescue a half-drowned woman from the sea—a human trafficking survivor—they are drawn back into a world of danger they thought they'd left behind. Beneath the island's beauty lies a criminal network involving corruption, deception, and ruthless operators. Gus and Arty form an unlikely alliance with a Maltese Cardinal, a widow, a Polish handyman, and a former US Navy SEAL to uncover a trafficking operation stretching from North Africa to Malta's corridors of power. To dismantle the network, they must risk everything on a dangerous plan. The book opens with a prologue set 500 years ago, featuring an island legend of a saint rescuing captives from Barbary slave traders—a story later echoed by Gus and his crew. Themes include loyalty, found family, survival, redemption, and standing against corruption. This is Book 1 in the Gus Harper K-9 Thriller series.

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Price History

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

$0.99 – $5.99

Currently free. Price has dropped 3 times over the last 9 months. Goes on sale roughly every 41 days. Typically stays discounted for 4 days.

Sales Rank

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

Currently around #26K in the Kindle store — a steady mid-list seller.

Rating & Reviews

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Currently 4.2★ from 371 reviews

Gaining approximately 23 new reviews per month. Steady word of mouth growth. Rating has dipped slightly from 5.0 to 4.2.

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