Rubicon
Every Mission Has Led to This. Every Enemy Has Been a Shadow of the Real Threat. This is the Endgame.
Adam Knight was supposed to recover. After years of dismantling global conspiracies, Penumbra Division ordered him to stand down. But Knight never stopped hunting.
While officially sidelined, he’s been tracking Rubicon—the shadow organization behind every crisis he’s helped avert. Just as he’s summoned home to determine if he’s still fit for duty, a tip from an old friend changes everything: a deadly enemy Knight once defeated has resurfaced after being on the run since their last encounter.
Operating outside Penumbra Division for the first time, Knight forms an uneasy alliance with the war criminal. The deal is simple—work together to infiltrate Rubicon or watch the world burn.
But Knight isn’t the only one hunting. Penumbra Division is closing in on Rubicon too. Former colleague Jessica Feeney follows her own lead, uncovering an IT company that may be the key to the shadow organization’s infrastructure and the power behind it.
A race around the globe is on to uncover Rubicon's endgame. What they discover is chilling. A new weapon. One so unimaginable it can destroy the world order with the press of a button. Every conspiracy Knight has dismantled leads here. And he’s ready to pay any price to stop Rubicon. But will his sacrifice be enough?
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Sam Cogley
My passion for storytelling began as a child, sparked by the exploits of James Bond and the action films of the 80s and 90s. As I grew, I found inspiration in the literary works of Tom Clancy, Michael Crichton, and Lee Child.
In 2024, I released my debut novel, Shadow Operative, the first in the Adam Knight Thriller series. What began as a single book has since grown into a fast-paced, globe-trotting series spanning five novels...and counting.
In June 2025, I launched a spin-off set in the same universe centering on Penumbra Division, starting with The Last Operator.
In early 2025, I signed a multibook deal with Boldwood Books to launch a brand-new series featuring Dane Winter, an elite ex-soldier turned freelance operative. The first book, Hostile Asset, was released in October.
My second Penumbra Division book will be available in Mid-November.
Off the page, I’m a devoted husband and proud father to a son and daughter. Without them, none of this would be possible.
Adam Knight Thrillers
Adam Knight Thrillers consists of six books. The current recommended reading order for the series is provided below.
