A Secret Service agent goes undercover to unmask the leader of a gang of diamond thieves.
| Actor | Role |
|---|---|
 Art MixU. S. Marshal Jim Cullen | U. S. Marshal Jim Cullen |
| VVirginia WarwickVirginia Marsden | Virginia Marsden |
| CClifford DavidsonBull Davidson | Bull Davidson |
 Hanley StaffordRudolph Truthers | Rudolph Truthers |
| DDorothy ChaseCleora | Cleora |
| CCharles ColbySherifv Buck Summers | Sherifv Buck Summers |
| HH. Paul WalshMarkes | Markes |
| AA. W. DearieSam | Sam |
| CCharles MearsQuosmo | Quosmo |