It was the eighth and last of a series of Zane Grey novels filmed by RKO. The book had been previously filmed in 1925 (starring Holt's father) and 1933.[2]
Plot
Two cowboys go to work for a rancher and his beautiful daughter. Together they search for wild horses. When they find the horses, a rival rancher offers to purchase them, but during the transaction he murders the good rancher. The rival rancher is soon killed by one of his own men, and he in turn is killed by the wild horse who is the leader of the herd.