Bandits ambush Capt. Roy Dexter of the U.S. Cavalry while he and his men escort a fortune in Confederate gold coins. Only Dexter survives the attack. He's subsequently sentenced to life in prison on the false belief he masterminded the ambush. Escaping from prison, Dexter sets about tracking down and exposing the true culprits.
| Actor | Role |
|---|---|
 Robert WoodsRoy Dexter | Roy Dexter |
 Dana GhiaMercedes Spencer | Mercedes Spencer |
 Angelo InfantiBarry Haller | Barry Haller |
 Antonio CasasColonel Jackson | Colonel Jackson |
 José Manuel MartínManuel de Losa | Manuel de Losa |
 Gérard TichyFrank Hamilton | Frank Hamilton |
 Antonio Molino RojoDave Griffin | Dave Griffin |
| TTomás TorresPedro | Pedro |
| GGiluio MaculaniSheriff | Sheriff |
 Osvaldo GenazzaniHamilton's secretary | Hamilton's secretary |
 Carlos RondaMercedes' father | Mercedes' father |
 Francisco NietoShop owner | Shop owner |
 Anne CaprileMercedes Spencer (french voice) | Mercedes Spencer (french voice) |