Harper's Justice Series

The Harper's Justice Series is a clean Christian western fiction series by R.J. Sloane, following six siblings of an outlaw father who became Arizona lawmen in the Arizona Territory, 1898–1904.

Justice executed is a joy to the righteous but a terror to evildoers. — Proverbs 21:15

The Harper name once struck fear in honest folk across the Arizona Territory. Now it strikes terror in outlaws.

Six children of notorious criminal Galen Harper turned their family legacy inside out — becoming the very lawmen their father spent his life outrunning. As Pinkerton agents, federal marshals, and territorial rangers, they hunt down men just like the one who raised them. In the untamed frontier of 1898–1904, justice has a new name: Harper.

This is Wild West Adventures Fueled by Faith — gritty frontier action with a moral backbone. No profanity, no explicit content, just the raw cost of choosing justice when revenge would be easier.

Blood Justice

Harper's Justice Prequel

Some debts aren’t settled in court—they’re settled in blood.

Grady Thatcher has waited six long years to make someone pay for the murder of his parents. Now, riding the open range as a livestock inspector, he’s got a badge, a gun, and the perfect cover to hunt their killers.

When he convinces his friend Deacon to join him on the Arizona Livestock Commission, they expect to chase down rustlers. Instead, they ride straight into a hornet’s nest of forged brands, corruption, and buried secrets—where every lead points to something bigger than cattle theft.

The deeper they dig, the clearer it gets. This isn’t about stolen cattle. It’s about power—and a trail of blood that leads straight to the men who butchered Grady’s family.

Now Grady and Deacon are marked men. But walking away was never an option.

Two friends. Two badges. No backing down.

A rugged Western tale of loyalty, vengeance, and the true cost of justice in the brutal Arizona Territory, 1893.

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Perfect for fans of Louis L'Amour and William W. Johnstone.

The Rustler Hunter

Harper's Justice Book 1

When forty-one successful manhunts make you a legend, there’s only one way left to go—down.

J.J. Westin, the infamous Rustler Hunter, goes undercover at Arizona Territory's largest cattle ranch to expose the rustlers bleeding it dry. The thieves aren't just stealing cattle. They're trusted cowboys operating from inside the bunkhouse.

What he doesn't expect is Hayley Harper, the tough-as-nails cook with secrets of her own. She's a Pinkerton agent working the same case and the daughter of notorious outlaw Galen Harper.

When their covers are blown, they uncover something far deadlier than rustling. A corruption network spanning three territories. With enemies closing in and bullets flying, the legendary manhunter and the outlaw's daughter must survive the badlands of 1898 Arizona, where trust is deadly and justice comes at gunpoint.


In the shadow of Canyon Diablo, where the historic Aztec Land & Cattle Company's Hashknife outfit controlled over a million acres of the Arizona Territory's most lawless land.

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Perfect for fans of Louis L'Amour and William W. Johnstone.

The Maverick Marshal

Harper's Justice Book 2

When the law is corrupt, only a maverick can set it right.

Deputy U.S. Marshal Flynn Harper has built his reputation on one rule: bring them in dead or alive. When a federal warrant arrives for A.C. Beaumont, wanted for swindling settlers and bleeding the railroads dry, Flynn rides hard for Holbrook, expecting a routine arrest.

Instead, he finds a town tangled in lies and fear. The evidence is too perfect. The witnesses, too rehearsed. And the terrified shopkeeper’s daughter is too desperate to protect a man she claims is no thief.
Flynn has always trusted his Colt .45 and his instincts. But when corrupt officials, escaped convicts, and a criminal network threaten to destroy an innocent family, this maverick marshal must decide if the badge on his chest still means something—or if it's just another brand of corruption.
In a place where justice often comes at the end of a rope, Flynn Harper will learn that the most dangerous enemy isn’t always the outlaw you’re hunting. Sometimes, it’s the system you’re sworn to serve.

A gritty tale of justice, betrayal, and redemption set against the unforgiving beauty of the Arizona frontier in 1899.

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Perfect for fans of Louis L'Amour and William W. Johnstone.

The Traitor's Badge

Harper's Justice Book 3

In a land ruled by grit and gunfire, even the badge can lie. 

Arizona Ranger Shane Harper built his reputation on quiet competence and unshakable resolve. In 1904, that reputation is tested when a raid goes wrong and he's forced to seek shelter at the Duncan ranch, where he meets a woman who challenges everything he thought he knew about strength. Tessa Duncan has been fighting to keep her ranch and raise her two children alone since her husband's death. When the stoic Ranger shows up wounded on her doorstep, she's tempted to turn him away. Instead, she finds herself drawn to the man who treats her children with unexpected gentleness and respects her independence. But someone wants Tessa gone. As Shane investigates the sophisticated rustling operation threatening her livelihood, he uncovers a trail of deception that leads disturbingly close to home — and begins to question the loyalties of those he once trusted with his life. In a territory where justice is hard-won and betrayal cuts deep, Shane must decide who to believe and how far he's willing to go to protect the innocent when brotherhood itself is on the line.

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Perfect for fans of Louis L'Amour and William W. Johnstone.

Harper's Justice Series Reading Order

  1. Ashes and Oaths
  2. Blood Justice
  3. The Rustler Hunter
  4. The Maverick Marshal
  5. The Traitor's Badge

FAQ

What order should I read the Harper's Justice series in?
Start with Ashes and Oaths, then Blood Justice, The Rustler Hunter, The Maverick Marshal, and The Traitor's Badge. Each book can also stand on its own.

Is the Harper's Justice series clean/Christian fiction?
Yes. The series is clean, faith-driven western fiction with no profanity, or explicit content, grounded in Proverbs 21:15.

Is the Harper's Justice series connected to the Arizona Ranger series?
No. The Arizona Ranger Series is a separate series by R.J. Sloane, though both are set in the Arizona Territory.