Down the Long Hills (Louis L'Amour's Lost Treasures)

After a brutal raid leaves only seven-year-old Hardy Collins and three-year-old Betty Sue Powell alive, they must navigate the treacherous open prairie in search of help. Armed with a knife, a loyal horse, and the survival lessons from Hardy’s father, the children use ingenuity and resilience to face the dangers of the wilderness. As they are pursued by hostile men, Hardy soon realizes that their survival will require all the strength and resourcefulness he can muster.