While Tex Ritter (as Tex Masters) sings "Down the Colorado Trail", accompanied by harmonica-playing sidekick Horace Murphy (as Lucky), pretty government agent Rita Hayworth (as Carmen Serano) is sent out to investigate a series of mysterious rodeo deaths. Ms. Hayworth and Mr. Ritter cross paths in Middletown Valley, where Ritter is looking for the gang that killed his brother.
Undercover girl Hayworth and singing cowboy Ritter are the main attractions. Hayworth and Hank Worden have a couple of smooth dance numbers. Ritter's "Down the Colorado Trail" and "I'm Bound to Leave Ol' Texas Now" are highlights; the latter ballad is especially nice. The "Trouble in Texas" is, most obviously, its poorly edited "rodeo footage". It might have, otherwise, been a better movie.