They killed his friend. And opened the gates to hell.
Former black ops assassin Bob Singleton has been living the quiet life for the past six months. Working a simple job under the Arizona desert sun. Keeping his pursuers at bay.
But trouble has a way of finding Bob.
A young father, Tito, is on the hit list of a local cartel led by a spoiled brat gangster, trading on his father’s reputation. He recklessly goes after Tito and inadvertently kills a close friend of Bob’s.
Now Bob is on a mission – he’s going to take down the entire cartel and terminate its leader. With extreme prejudice.
As Bob brings his own unique brand of mayhem, the cartel pushes back with every weapon at its disposal including an elite sicario, a jungle cat, and a dirty cop.
But Bob won’t back down. He wants justice – even if it means putting his own life on the line.
The series
Some battles never truly end — they just change shape.
Read full series description
In the Rogue Warrior thrillers, the line between justice and survival is razor-thin, and former CIA assassin Bob Singleton knows it better than anyone. Haunted by betrayals and missions that blurred the meaning of loyalty, Singleton now operates in the shadows of a world he once served, hunted by old enemies and former allies alike.
Set against a backdrop of covert operations, dark conspiracies, and shifting global threats, the series trades the glamour of traditional spy fiction for something grittier — a landscape where violence leaves scars deeper than the ones on the surface. Singleton is no invincible hero; he’s a man worn thin by choices, constantly weighing the cost of redemption against the urge for revenge.
What sets this series apart isn't just the relentless pace or the sharp, unforgiving action scenes — it’s the raw humanity threaded through every chapter. Singleton’s journey is brutal, often bleak, but never empty. There’s a real weight to his battles, a sense that every decision could be his last, and that every ghost he carries has a name.
Drawing readers into a world of ruthless mercenaries, double-dealing operatives, and the unquiet ghosts of past missions, the Rogue Warrior books are built for fans of high-stakes espionage thrillers who crave more than just gunfights and car chases. They offer a dive into the mind of a man shaped — and nearly broken — by the very system he once believed in.
For readers who like their thrillers intelligent, ruthless, and crackling with tension, Bob Singleton’s story offers no easy answers — only hard truths and harder choices.
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