Hopalong Cassidy: Twilight On the Trail

Hopalong Cassidy, California and Johnny pose as three English detectives in order to solve the case of disappearing cattle. Hoppy suspects the rancher's foreman as the chief rustler. Just as Hoppy is about to close in on his prey, the foreman confirms his own suspicions that Hoppy and his boys are not really British detectives. The rustlers trap the "detectives" and imprison them in an abandoned mine shaft which they are using to store the stolen cattle.