Valley of Wild Horses tells the tale of Panhandle "Pan" Smith from the time he was a small boy until he becomes a cowboy, known by many from Montana to Arkansas. His childhood sweetheart is Lucy and his rival is Dick Hardman who always gets in the way of their love. After a clash with Dick and loss of his horse, Pan leaves his home town and becomes known, sometimes for the wrong reasons, but he never forgets Lucy and his family. When Pan meets his old pals, he learns that his father has been swindled, and Lucy is being blackmailed into marrying Dick Hardman in order to save her father, he decides it's time for him to return and face his old adversary.

Zane Grey (1872-1939) was an American author best known for his popular adventure novels and stories that were a basis for the Western genre in literature and the arts. With his veracity and emotional intensity, he connected with millions of readers worldwide, during peacetime and war, and inspired many Western writers who followed him. Grey was a major force in shaping the myths of the Old West; his books and stories were adapted into other media, such as film and TV productions. He was the author of more than 90 books, some published posthumously and/or based on serials originally published in magazines.