Pirates on Horseback (1941) | Directed by Lesley Selander

"Pirates on Horseback" (1941) is a Western adventure film directed by Lesley Selander, featuring William Boyd as the iconic Hopalong Cassidy. In this installment of the Hopalong Cassidy series, Hoppy, along with his sidekicks Lucky Jenkins (Russell Hayden) and California Carlson (Andy Clyde), must tackle a group of ruthless outlaws.

The story centers around Hoppy's efforts to protect a gold mine that has attracted the attention of a gang of bandits led by the villainous Chalky Martin (Morris Ankrum). As the outlaws attempt to steal the gold and terrorize the miners, Hoppy and his friends step in to bring justice to the lawless territory. Along the way, they encounter an array of Western challenges, from shootouts to rugged landscapes, while also uncovering the mystery behind the "pirates on horseback" — bandits who have been striking fear into the hearts of locals.

Filled with action, horseback chases, and a touch of humor, "Pirates on Horseback" is a thrilling entry in the Hopalong Cassidy series, highlighting the bravery and resourcefulness of Hoppy and his companions as they fight to maintain law and order in the Old West.