Riders of the Dusk is another of Monogram's formula Whip Wilson westerns. Since the studio couldn't build an entire film around Wilson's bullwhip prowess, a plot was called for. This time around, it's the one about a U.S. marshal who searches high and low for a mysterious masked desperado. The mystery angle is minimal, since seasoned movie fans will be able to determine the mystery person's identity within 15 minutes. As always, Andy Clyde is a tower of comic strength as Whip Wilson's grizzled old sidekick.
| Actor | Role |
|---|---|
 Whip WilsonMarshal Whip Wilson | Marshal Whip Wilson |
 Andy ClydeWinks Holliday | Winks Holliday |
 Reno BrowneNora Neal | Nora Neal |
 Tristram CoffinJ.J. Hall | J.J. Hall |
 Marshall ReedBrad Bradshaw | Brad Bradshaw |
 Myron HealeySheriff Jim | Sheriff Jim |
 John MertonArt - Henchman | Art - Henchman |
 Mike RaganGus - Henchman (as Holly Bane) | Gus - Henchman (as Holly Bane) |
 Lee RobertsDanny | Danny |
| DDee CooperTom - Henchman | Tom - Henchman |
| TThornton EdwardsDeputy Ed | Deputy Ed |