Cast & Crew
Hopalong Cassidy is training volunteers for General Theodore Roosevelt's Rough Riders at the outset of the Spanish-American war. Major McCready of Fort Boone orders Hoppy to round up 500 wild horses to be trained as cavalry horses. With the help of his pals Lucky Jenkins, Windy Halliday and Smokey and his troop, Hoppy rides to Ghost Creek Canyon and makes camp. The men split up and after a short week, they have herded the requisite number of horses into the box canyon. Unknown to Hoppy, however, Black Jack Carson, his right-hand man Hawks and his followers plan to reroute the herd and sell them. Carson sends ten horses with his brand to infiltrate Hoppy's herd. Meanwhile, McCready's young son Boots, who worships Hoppy as a hero, becomes worried when no word is heard from Hoppy and rides off alone to the canyon. Carson's rustlers capture Hoppy and his men and tie them with rope. They then perform their own trial, in which Carson deems Hoppy guilty of horse thievery because his horses are mixed in with the herd. The hostages are left alone, and Windy blows his bugle, which alerts Boots up on the ridge. Boots releases the men. They attack Hawks, who accidentally falls on his knife and dies. Hoppy starts a fire at the end of the canyon in order to stampede the horses, which he hopes will enable them to get out without the rustlers' interference. During the rush, there is a gunfight. Carson is warned of the trouble and rides out with backup, but Barbara, McCready's daughter, overhears Carson's conversation and warns Fort Boone to round up the cavalry. She then rides to Hoppy, who diverts the herd and sends them across the river. Hoppy holds back Carson and his men at the pass until the cavalry arrives and arrests them. Hoppy successfully herds the horses to the fort, after which he and his men don military uniforms and ride off to the battlefields.
D. M. Abrahams
The title card of the film reads "Clarence E. Mulford's Texas Trail." According to copyright records, director Dave Selman held up production of the film for two weeks so that the actors could practice horseback riding. The Navajo Indian Reservation donated 1500 wild horses for use in the film. According to a modern source, Earle Hodgins appears in the film. For additional information on the series, see entry above for Hop-Along Cassidy and consult the Series Index.