In Old Kentucky

Horse trainer Steve Tapley is caught between the feuding Martingale and Shattuck families. He sides with young Nancy Martingale and her grandfather Ezra, and the feud is to be resolved by a horse race between the favorites of each family. Unfortunately, the Martingale's horse, Greyboy, only runs well in mud. And it hasn't rained in a long time.

• George MarshallDirector
• Charles T. DazeyWriter
• Sam HellmanWriter
• Gladys LehmanWriter

• Will RogersSteve Tapley
• Dorothy WilsonNancy Martingale
• Russell HardieDr. Lee Andrews
• Charles SellonEzra Martingale
• Louise HenryArlene Shattuck
• Esther DaleDolly Breckenridge
• Alan DinehartSlick Doherty
• Charles RichmanPole Shattuck
• Etienne GirardotPluvius J. Aspinwall, the Rainmaker
• John InceSheriff
• Bill RobinsonWash Jackson
• Bill RobinsonGreyboy