Flint Moran was fourteen years old when the Civil War ended. He was fifteen when his family bought a plot of land near Tinhorn, Texas. He was barely nineteen when he caught a pair of rustlers stealing cattle—and singlehandedly brought them to justice. How did a teenaged boy track down and capture two hardcase thieves without any help? That's what Tinhorn sheriff Buck Jackson wants to know. He can't help but be impressed by Flint's sharp eye and natural talent with a Henry rifle. So he offers to deputize the boy—tin badge, Colt Frontier Six-Shooter, and all—and Flint happily accepts.

After a lifetime of robbing banks and holding up trains, Jimmy "Slash" Braddock and Melvin "Pecos Kid" Baker are ready to call it quits, though not completely by choice. Sold out by their old gang, they have to bust out of jail and pull one last job to finance their early retirement. The target is a rancher's payroll train. Catch is: the train is carrying a Gatling gun and 20 deputy US marshals who know they're coming. Caught and quickly sentenced to hang, their old enemy - the wheelchair-bound, bucket of mean, Marshal L. C. Bledsoe - shows up at the last minute to spare their lives.

This series opens with an attempt on Marshal Hawk's life by an unknown gunman, along with a mysterious telegram from Wichita, written to the would-be killer, and a second telegram with the name of Hawk's sworn enemy, Deputy James Cartwell, on it as another target for assassination. Wichita holds memories for both of the targets of the "hit," and even though they hate each other, they reluctantly join forces to hunt down the person who ordered the hit on them.

Orphaned at the age of seven and adopted by Indians, Jami Ian MacCallister grew into a man more at ease in the wilderness than among men. But when the westward strike drove him across the Arkansas Territory into Texas, he finally found himself a home — in the middle of a bloody war. Texans like Jim Bowie and Sam Houston were waging a fierce struggle against Santa Ana’s Mexican army and Jami MacCallister made the perfect scout for the fledgling volunteer force.

In his younger days, Taylor Callahan didn’t know right from wrong—and didn’t much care either. As a Confederate bushwhacker, renegade outlaw, and all-around hellraiser, he gave the devil himself a run for his money. Somewhere along the road to perdition, he decided to change his wicked ways. To atone for his sins. So he became a traveling preacher. But Taylor Callahan is no ordinary preacher. He rides the Western circuit looking to help lost souls. His mission of peace takes a violent turn when he enters the godforsaken town of Falstaff, Texas.