Al Goddard, a detective who works for the United States Postal Inspection Service, is assigned to arrest two criminals who've allegedly murdered a U.S. postal detective.
| Actor | Role |
|---|---|
 Alan LaddAl Goddard | Al Goddard |
 Phyllis CalvertSister Augustine | Sister Augustine |
 Paul StewartEarl Boettiger | Earl Boettiger |
 Jan SterlingDodie | Dodie |
 Jack WebbJoe Regas | Joe Regas |
 Stacy HarrisPaul Ferrar | Paul Ferrar |
 Harry MorganGeorge Soderquist | George Soderquist |
 David BauerDavid Goodman | David Goodman |
 Dan RissMaury Ahearn | Maury Ahearn |
 Harry AntrimTaylor | Taylor |
| PPaul LeesGene Gunner | Gene Gunner |
 Geraldine WallMother Ambrose | Mother Ambrose |
 George J. LewisLeo Cronin | Leo Cronin |
 Murray AlperDriver | Driver |
 Byron BarrPoliceman | Policeman |
 Symona BonifaceWoman | Woman |
 Billy EngleMan | Man |
 Fritz FeldWindow Dresser | Window Dresser |
 Kathleen FreemanNun | Nun |
 Art GilmoreNarrator | Narrator |
 Frank HagneyMotorcycle Cop | Motorcycle Cop |
| WWhitey HauptBoy | Boy |
| JJerry JamesPoliceman | Policeman |
| SSheldon JettFat Man | Fat Man |
| PPat LanePoliceman | Policeman |
| WWilliam MeaderSharkey | Sharkey |
 Patsy O'ByrneWoman | Woman |
| HHal RandPostal Truck Driver | Postal Truck Driver |
| FFrances SandfordNun | Nun |
 Ralph SanfordMaxie Wilder | Maxie Wilder |