In the tradition of several of the Gene Autry vehicles of the 1930s, Roy Rogers' Helldorado is built around a real-life frontier celebration. In this instance, the story is set against the backdrop of Las Vegas' annual "Heldorado Week", at which time the Old West came to life in the form of costumed revellers, equine parades and pre-rehearsed stagecoach holdups and bank robberies. Arriving in Las Vegas to participate in the festivities, Roy Rogers ends up crossing six-guns with a gang of gamblers who've been delinquent in their income tax. Gee, if Roy had stuck around a bit longer, he could have shot it out with Bugsy Siegel (or Bugsy's
Godfather counterpart Moe Green!) Rogers' perennial costar (and later wife) Dale Evans costars as a female sleuth who gets in over her head when she tries to capture the gamblers herself. ~ Hal Erickson, All Movie Guide