Mark Greathouse

Black gold and blood don't mix well on the Nueces. Having hung up his badge and kept his promise to Cassie, Texas Ranger Lucas Dunn, Jr. is buildin...

Isa O’Toole faces his fiercest trials yet on the raw Wyoming frontier of the 1880s. Isa O’Toole survives a brutal ambush only to be locked in a lif...

Death rides hard along the Nueces. After dismantling the Irish Mob, Texas Ranger Lucas Dunn, Jr. hangs up his badge—keeping a promise to Cassie and...

18-year-old Isa O’Toole is no longer a boy chasing purpose…he’s a man building it, hoofbeat by hoofbeat, in the wide-open Wyoming Territory. Still ...

Seventeen-year-old Isa O’Toole rides deeper into the untamed West…where survival demands more than grit, and faith is the only compass that never f...

Oil runs slick past the Nueces Strip. In 1899, Texas Ranger Lucas Dunn, Jr. is sent deep into dangerous territory—where black gold flows, and blood...

Award-winning author Mark Greathouse launches a powerful Young Adult Western series steeped in grit, faith, and historical truth too often left unt...

An Epic Western Journey of Faith, Freedom, and Frontier Grit—Now in One Complete Set. In The Frontier Chronicles: The Complete Series, experience t...

Trouble’s riding the rails beyond the Nueces Strip. Texas Ranger Lucas Dunn, Jr. (“Junior”) heads west in 1897, chasing justice along the bloodstai...

Justice rides hard. Legends ride harder. Tumbleweed Tumblings is a gripping collection of Western short stories and frontier poetry from Mark Great...

TEN FULL-LENGTH WESTERN TALES OF GRIT, GLORY, AND GUNSMOKE. Vengeful sons. Ruthless outlaws. Justice forged in blood. A young man returns home to f...

From Irish roots to a Texas legend. In 1850, fifteen-year-old Nicholas Dunn lands in Corpus Christi, Texas, fleeing famine-stricken Ireland with no...

Blood runs hot beyond the Nueces Strip. Texas Ranger Lucas Dunn, Jr. (“Junior”) rides deep into the heart of South Texas in 1896, where the Guadalu...

In the unforgettable final chapter of The Frontier Chronicles, war isn’t just on the horizon—it’s here. And Jack O’Toole must rise to meet it. At t...

The Nueces Strip is no place for a young Texas Ranger to earn his stripes. Lucas Dunn, Jr. has spent his life in the shadow of a legend—but now the...

In this thrilling Young Adult Western Fiction adventure, the seventh chapter of The Frontier Chronicles rides hard into the heart of danger, where ...

The Nueces Strip calls him back one last time. Two decades after stepping away from the Texas Rangers, Luke Dunn is done with war, bloodshed, and t...

The Nueces Strip bares its unforgiving soul. In the turbulent final years of the Civil War, the Texas frontier is a powder keg of lawlessness and s...

War rages across the Nueces Strip. As the War Between the States engulfs the nation, Texas Ranger Captain Luke Dunn finds himself on a perilous fro...

The unyielding sixth chapter of The Frontier Chronicles thrusts readers into the tumultuous prelude to the Civil War, where Jack O’Toole’s faith, g...

Blood spills freely on the Nueces Strip. Texas Ranger Captain Luke Dunn’s life is forever entwined with the rough and tumble prairies of the Nueces...

The relentless fifth chapter of The Frontier Chronicles sweeps readers back to the unforgiving American West, where Jack O’Toole’s loyalty, enduran...

The gripping fourth installment of The Frontier Chronicles plunges readers into the unforgiving wilds of the American West. As Jack O’Toole faces t...

Deceit is a dangerous game on the Nueces Strip. Texas Ranger Captain Luke Dunn is fighting for justice. Amid the dangers of the Texas frontier—from...