A series of grisly murders plague a small mountain community and the sheriff suspects a local scientist whom he dislikes. Together with a former professor and the professor's pretty daughter, the scientist sets about solving the crimes and discovers the killer is an oversized 16th century conquistador, resurrected by a lightning bolt from his mountain grave.
| Actor | Role |
|---|---|
 Ed KemmerWayne Brooks | Wayne Brooks |
 Sally FraserJanet Cleveland | Janet Cleveland |
 Morris AnkrumDr. Frederick Cleveland | Dr. Frederick Cleveland |
 Bob SteeleSheriff Parker | Sheriff Parker |
 Buddy BaerVargas the Giant | Vargas the Giant |
| GGary CrutcherCharlie Brown | Charlie Brown |
| BBilly DixIndian Joe | Indian Joe |
 Oliver BlakeCafe Proprietor | Cafe Proprietor |
| JJolene BrandAnn Brown | Ann Brown |
| NNed DavenportFirst Townsman | First Townsman |
 Ewing Miles BrownTownsman | Townsman |
| FFrank Hart TaussigTownsman (uncredited) | Townsman (uncredited) |
| RRalph BrookePosse Member (uncredited) | Posse Member (uncredited) |