Lacey is after the profits of the Foster and Morales rodeo show. He has Morales killed during a stunt and then forces Foster to take him on as a silent partner. When Rex Allen joins the show, Lacey tries to get rid of him also. But Rex survives and now believes Morales' accident may have been murder.
| Actor | Role |
|---|---|
 Rex AllenRex Allen | Rex Allen |
 KokoKoko - Rex's Horse | Koko - Rex's Horse |
 Mary Ellen KayJanet Wells | Janet Wells |
 Buddy EbsenMuscles Benton | Muscles Benton |
 Roy BarcroftSteve Lacey | Steve Lacey |
 Tristram CoffinJack Foster | Jack Foster |
| BBonnie DeSimoneJuanita Morales | Juanita Morales |
 Don BeddoeMr. Richards | Mr. Richards |
 Jonathan HaleDr. Sands | Dr. Sands |
 Harry HarveyVeterinarian | Veterinarian |
 Rory MallinsonSheriff Baxter | Sheriff Baxter |
 Joseph ForteDr. Teal | Dr. Teal |
| BBuff BradyPablo Morales | Pablo Morales |
 Bobby ClackBuck (uncredited) | Buck (uncredited) |