U.S. Marshal Hopalong Cassidy is called when a town becomes overun with bad guys. Disguised as a member of a medicine show, Hoppy discovers that the ringleader is none other than sweet li'l ol' Ma Burton.

Roy and Gabby fight bad guys to save the town of Deadwood.

Two young horse traders guide a Mormon wagon train to the San Juan Valley and encounter rugged terra...

Stagecoach robbers take the money Hoppy was going to use to buy cattle so Hoppy, California and Lin ...

When the outlaw El Toro saves Hoppy's life, Hoppy agrees to find his missing grandson.

Julie's husband has been murdered and land agents want her to sign away her property rights. Hoppy w...

Hoppy's friend Dennis owns a rich gold mine. Frazier who owns the adjoining mine and wants the Denni...

The local school is causing Hoppy problems. First Bar 20 cattle are stolen when Hoppy investigates a...

Escaped criminal "The Fox" hates Hoppy and a Rurales colonel for imprisoning him and lures Cassidy t...

Caldwell and Nixon have their men rob the stage and then critcize the Sheriff for not catching the r...

Hoppy and Lucky are headed to South America to deliver a heard of cattle. Bay guy Ralph Merritt gets...

Buck Colins heads a group of local ranchers who are trying to prevent the railroad from completing i...

Hoppy goes to town to help Marshal Windy with some rustlers and winds up helping the widow Joyce whe...

Hoppy goes undercover as a gambler from the East when Bar 20 cattle are stolen by unknown rustlers. ...

An evil gang is involved in both cattle rustling and the robbing of stagecoaches. Hoppy must stop th...

A crusading newspaper editor recruits his old friend Hoppy to take the job of Marshall in a town rif...

On a cattle drive Hoppy, camp cook Windy, companion Lucky, and young Artie Peters encounter an eccen...

Hoppy's brother has been murdered and he is on the trail of the murderers. To get them he makes hims...

Problems come in the form of one of Hopalong Cassidy's neighbors, but the matter is settled when Hop...

The U.S. Army needs more horses for the Spanish-American War. Hoppy must turn his Bar 20 cowhands in...

Hoppy goes undercover as an outlaw (which permits him, for once, to drink and be mean to children) t...