Trigger, Jr. 1950

Evil Grant Withers lets a killer horse loose to ruin valuable horses on nearby ranches. He hopes to shake down the ranchers for his "protection". Roy tracks down the bad guys, but is suddenly trapped by them. Peter Miles, a boy terrified of horses, overcomes his fear and rides for help to save the day.

Cast:

Roy Rogers
Roy Rogers 

Trigger
Trigger - The Smartest Horse in the Movies 

Dale Evans
Kay Harkrider 

Gordon Jones
Splinters 

Pat Brady
Sparrow Biffle 

Grant Withers
Manson