Newly married Texas Ranger Andy Pickard and his new partner, Logan Daggett, investigate a series of murders and cattle thefts in central Texas, a task complicated by a gang of masked vigilantes and the appearance of a notorious gunman.

Ten years ago, Johnny Hartford left Credence, Texas to become a Pinkerton Agent in Chicago. Now on his return, everything has changed: his dying father will barely speak to him, his brother is running wild, and longhorn rustling is rife. Determined to make amends with his family and catch the cattle thieves, Hartford turns to old Sheriff Milton for help - but then a prominent local rancher is shot in the back, and Hartford discovers that almost everyone...

While visiting a ranch near Yellowstone National Park with his parents, Summer, and her parents, Teddy Fitzroy investigates the disappearances of bison and an irreplaceable necklace.

After a cattle train bound for Texas is ambushed by blood-thirsty rustlers, legendary mountain man Smoke Jensen, on a mission of vengeance, vows to bring swift--and deadly--justice to the men responsible.