(Book two in the series) In 1876, five siblings on an Arizona Territory ranch have to hide the fact they're orphans. If the authorities discover their secret, the Martin children will be removed from the Box M and placed in an orphanage in Tucson. The secret is safe with fifteen-year-old Ruth, fourteen-year-old Thad, and twelve-year-old Sarah; but can ten-year-old Bart and eight-year-old Billy keep it? To make matters worse, the Martins have made a commitment that they won't lie to Sheriff Packard or any other people who visit the ranch and wonder where the adult Martins are. These five siblings are about to have their faith and their courage tested as they've never been tested before!

The first book in this series, set in the post-Civil War Arizona Territory, finds the five recently orphaned Martin siblings facing a serious situation. Most folks in their vicinity know Mrs. Martin passed away two years ago. They don't know that Mr. Martin is now deceased too. The siblings know they can run the ranch by themselves, but they don't know if they can keep Pa's death a secret. If their secret gets out, the local law will haul them off the Box M and throw them into an orphanage near Tucson. They'll need to work together and trust God to help them if they're going to succeed. Saddle up and ride along with the Box M Gang for an adventure you won't forget!

The Civil War has ended, and Nate Landry has returned to the Arizona Territory, accompanied by his best friend Wolf. Because he has no interest in being a farmer, a cowboy, a shopkeeper, or a lawman, Nate becomes a bounty hunter. Parts of the Arizona Territory are still wild and lawless, so Nate, often with help from Wolf, has plenty of work to do.
Anna Thomas needs help. Her son has been kidnapped and her husband murdered. She wants Nate to deliver the ransom money, rescue her son, and then capture or kill the outlaws. He's looking for a way to refuse her request for help, but then Nate discovers that both Anna's husband and the men who murdered him are shadowy figures from his past.

Nate and Wolf return in this second book of the series. This time they're taking on a family of outlaws. Each of the five Womack brothers is wanted for something. All Nate and Wolf have to do is catch one of them and then wait. When the other four Womacks hear the news of their brother's capture, they'll come running. They'll come shooting too. The bounty hunters will have whacked a hornet's nest, and they'll need all their skills to keep from getting stung.

Book three in the series finds Nate and Wolf pursuing a gang of outlaws who helped themselves to $20,000 from the bank in Florence, Arizona Territory, and then disappeared. Although the bounty hunters have plenty of experience at tracking down outlaws, the gang's cunning leader manages to stay one step ahead of them. The chase leads them from Florence to Tucson, then to Goose Flats. Each time Nate and Wolf get close, the outlaws disappear like a dust devil. Although they're facing one of the most challenging adversaries they've encountered so far, neither of the bounty hunters will even consider giving up. Adventure abounds as the reader rides into the old West.

In book four of the series, Nate and Wolf face a gang of clever outlaws who use the skills they learned in the theater to aid them in pulling off their robberies. Disguised as people nobody would notice, they slip into a town or onto a stagecoach, blending in with the folks around them. These outlaws plan their robberies, commit the crimes, and then change their appearance so skillfully no one has been able to apprehend them. In addition, Leah Fulton, the "Dust Devil," is back, looking for revenge on Nate and Wolf, whom she blames for the death of her brother! As good as Nate and Wolf are at their jobs, they're not too proud to accept help--even from some unlikely sources. In addition to a town marshal and his deputy, with whom they've worked in the past, the bounty hunters are joined by a Pinkerton agent and a woman who runs a boarding house. Hang onto your hat, Pardner! This ride might get a little wild!

In this first book Arty struggles with bitterness as he questions how a loving God could have let his father die. Before they even reach the ranch, Arty and his mother have to deal with two unsavory characters, who are up to no good. They also encounter Marshal Luke Bodie and meet the ranch hands. Then they take over the Circle A, and Arty finds himself on the most exciting ride of his life.

Arty, still struggling with bitterness over the death of his father, develops into a real cowboy. His mother reluctantly allows him to get his first gun when Marshal Bodie agrees to teach him how to handle it safely. Then a cattle-killing black cougar, named Phantom, returns to the territory; and Arty faces a situation that tests him as he's never been tested before.

This book takes readers on a picnic with Arty and his friends Esther, Jasper, and Tom. When they ride to an unfamiliar section of the Circle A, they discover a beautiful little valley. A violent storm interrupts the picnic and sends the four friends riding for cover. By the time they reach an old line shack, the storm is raging; and Tom has disappeared. Arty rides back into the storm to rescue his friend, but both of them face serious danger.

This book finds Arty and his new friend Little Hawk, an Apache, back at the line shack Arty discovered in the previous book. This time, however, the shack isn't deserted. Little Hawk has been living there. Before long, though, someone else moves in while Little Hawk is away. These unwelcome guests prove to be looking for more than shelter; but Arty, Little Hawk, and the Circle A hands are ready for them.

The final book in the series follows Arty on a cattle drive, moving a herd from the ranch to Kansas with an outfit made up of riders from the Circle A and another ranch. From the first day of the roundup to the end of the trail, Arty encounters both new friends and new dangers. As he follows the herd and faces the troubles, Arty realizes that his education as a cowboy and as a Christian isn't over yet. He recognizes more than ever his need for God's help and guidance.