William Desmond plays Jim Davis, a secret service agent by day and masked avenger by night. Ethlyne Clair provided feminine appeal, while Bud Osborne, as the notorious Butch Bradley, and a young Boris Karloff took care of the villainy.
| Actor | Role |
|---|---|
 William DesmondJim Davis / The Vanishing Rider | Jim Davis / The Vanishing Rider |
 Ethlyne ClairMary Allen | Mary Allen |
 Nelson McDowellPop Smith | Pop Smith |
 Bud OsborneButch Bradley | Butch Bradley |
 Boris KarloffThe Villain | The Villain |