Ben Connor is a gambler who knows horses. He goes out west to get away from the gambling life he has been leading in New York. There he discovers a breed of grey horses that he thinks are the best horses he has ever seen. The problem is that these horses are bred in a secret valley known as the Garden of Eden and that outsiders are not welcome there. Connor sees these horses as a means of getting rich on the race tracks, but how to get one is a problem. A great horse story coupled with the typical excitement one expects from Max Brand makes this a great book.