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  • Proof of Life

Proof of Life

Gideon Ryker #3 / 4
by Jack Slater
Proof of Life (Gideon Ryker #3) by Jack Slater
★ 7.00 / 1
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FROM MILLION-SELLING AUTHOR JACK SLATER

What’s a life worth?

Gideon Ryker is learning that the fanatical cult known as the Brotherhood only worship power. He has their tyrannical messiah Father Gabriel chained in a cellar—but a brutal new leader has seized power in his place. And while Miranda may want Gabriel gone, many in New Eden still worship him.

That makes him dangerous leverage... and Gideon isn't the only one who knows it.

With the Faithless reeling and his sister’s fragile freedom at stake, time is running out. Hunted by a new tyrant, courted by spies and cornered by criminals, every decision risks disaster. And some choices don’t just leave scars.

They make ghosts.

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ThrillerSpy ThrillerSuspense Thriller
Release date: May 6, 2025

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★ 8.00 / 3
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★ 7.50 / 2
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Jack Slater

Jack Slater

Jack Slater is a name that’s quickly becoming synonymous with high-octane thrillers that keep readers on the edge of their seats. Born in London and now living in the West Country, Slater brings the raw, gritty atmosphere of his surroundings into his writing, crafting suspenseful narratives that feel as dangerous as they are immersive. Drawing on a diverse background in International Relations, he has an uncanny ability to weave complex geopolitical issues into pulse-pounding plots, making his work feel both timely and deeply insightful.

Read more ...

Slater’s journey into writing started not with a desire for fame, but a deep curiosity about the world of espionage and covert operations. His debut novel, Dark State, introduced the world to Jason Trapp, a CIA operative whose dangerous, high-stakes missions make James Bond look like an amateur. But it’s not just action that makes Slater’s books stand out — it’s the layered characters, intricate world-building, and the relentless tension that pushes every story forward. Readers flock to his books not just for the thrills but for the authentic, nuanced portrayal of the world’s most shadowy corners.

Building on his success with the Jason Trapp series, Slater expanded his universe with new characters like Gideon Ryker and Blake Larsen, each exploring different aspects of international intrigue and danger. His novels are a favorite of fans of authors like Vince Flynn and Tom Clancy, offering a perfect blend of action, intelligence, and complex moral dilemmas.

When he’s not writing, Slater is an avid hiker, skier, and proud dog owner. His adventures in the great outdoors inform the relentless pacing of his books, where every chase feels like it could spill into real life at any moment. Slater is also an active presence on social media, where he connects with readers and shares a peek into the mind behind the thrilling stories.

Jack Slater’s books are more than just fast-paced spy thrillers; they are reflections of our modern world, where the lines between right and wrong are often blurred, and survival is a game of wit and will. As his readership continues to grow, it’s clear that Slater is a name that will be around for a long time, shaping the future of action-packed fiction.

Gideon Ryker

In a locked room deep in the south of France, a man wakes to silence—and pain. Scars run deep across his body, his memory wiped clean, and the only clue to who he is comes in the form of a child’s face he doesn’t recognize, but can’t forget. This is the raw and unsettling beginning of a thriller series that refuses to offer easy answers, instead dragging readers through the fog of a fractured identity and the relentless pursuit of the truth.

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The Gideon Ryker series walks a fine line between psychological suspense and high-stakes espionage. It doesn’t just ask who the protagonist is—it asks what’s left of a person when memory, trust, and name are all stripped away. The atmosphere is thick with uncertainty; allies shift, truths unravel, and every revelation threatens to dismantle the fragile framework the man is building for himself. The pacing is sharp, but the emotional weight lingers—making each action scene carry more than just bullets and blood.

What sets this series apart isn’t just the kinetic energy of its storytelling, but the way it pulls readers into the mind of someone who has to rebuild himself from the ground up while dodging those determined to bury him for good. Dark, immersive, and consistently unsettling, the books explore themes of identity, survival, and redemption through a lens that feels as much noir as it does spy thriller.

With strong word-of-mouth and growing buzz among readers who crave character-driven action that still punches hard, this is a story that doesn’t follow the genre playbook—it rewrites it in code. Fans of shadowy conspiracies, gritty pacing, and morally grey protagonists will find plenty to unravel—and even more to question—in this relentless, atmospheric series.


Gideon Ryker consists of three books and series is set to expand with the upcoming release of one more book. The current recommended reading order for the series is provided below.

Code of Arms (Gideon Ryker #1)
★ 7.50 / 2
Test of Faith (Gideon Ryker #2)
★ 7.00 / 2
Proof of Life (Gideon Ryker #3)
★ 7.00 / 1
Terms of Service (Gideon Ryker #4)
⧗ 8.00 / 2


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