Undercover agent Mark Owens is sent to aid the Border Patrol in the trans-border town of Hernandez in breaking up a well-organized band of smugglers.
| Actor | Role |
|---|---|
 Rosalind KeithNancy Rawlings | Nancy Rawlings |
 Charles QuigleyMark Owens | Mark Owens |
 Rita HayworthRita Owens | Rita Owens |
 John GallaudetRay Patterson | Ray Patterson |
 Marc Lawrence'Blast' Reardon | 'Blast' Reardon |
 Patricia FarrMaimie | Maimie |
 John HamiltonCaptain Wallace | Captain Wallace |
 Ralph ByrdWilliamson | Williamson |
 Walter Soderling'Camera-Eye' Condon | 'Camera-Eye' Condon |
 Russell HicksKurt Feldon | Kurt Feldon |
 John TyrrellBill Morris | Bill Morris |
 Lester Dorr'Trigger' | 'Trigger' |
 Sammy BlumNot listed | Not listed |
 Dick BotillerNot listed | Not listed |
 Jay EatonNot listed | Not listed |
 Eddie FetherstonNot listed | Not listed |
 Robert FiskeNot listed | Not listed |
 Sam FlintNot listed | Not listed |
 Herbert HeywoodNot listed | Not listed |
 Howard HickmanNot listed | Not listed |
 Ruth HilliardNot listed | Not listed |
 Matty KempNot listed | Not listed |
 Lucille LundNot listed | Not listed |
 Frank SullyNot listed | Not listed |
 Martha TibbettsNot listed | Not listed |
 Crawford WeaverNot listed | Not listed |
| JJane WeirNot listed | Not listed |