The Thirteenth Bullet

Celtic Revenge
Young Irishman Time Carlow couldn't be more proud to be a Texas Ranger, riding with his uncle Kileen, a former bare-knuckle boxer. After Kileen, Carlow, and his best friend break up a vicious Texas gang, they bring their captives to the town where Carlow grew up. But hatred of the Irish runs deep, and the town's mayor and sheriff betray them. The outlaws escape, wounding Carlow and killing his lifelong friend.
Carlow is devastated, for he had sworn an ancient Irish blood-oath with the dead man -- symbolized by the stones they always carried. Consumed by vengeance, Carlow rides off in a fury, throwing away both the stones and his Ranger's star. Returning to the hometown that had always resented him -- and ultimately betrayed him -- he is out for blood. And even his icy cool demeanor cannot quench his burning desire for revenge....