Jerry Blake (aka Federal Operator 99) teams-up with Joyce Kingston to thwart the plans of escaped crime boss Jim Belmont.
| Actor | Role |
|---|---|
 Marten LamontJerry Blake | Jerry Blake |
 Helen TalbotJoyce Kingston | Joyce Kingston |
 George J. LewisJim Belmont | Jim Belmont |
 Lorna GrayRita Parker | Rita Parker |
 Hal TaliaferroMatt Farrell | Matt Farrell |
 LeRoy MasonMorton | Morton |
| WWilliam StevensAgent Fred Martin | Agent Fred Martin |
 Maurice CassSignor Giuseppe Morello | Signor Giuseppe Morello |
 Kernan CrippsAgent Thomas Jeffries | Agent Thomas Jeffries |
| EElaine LangeCountess Delremy | Countess Delremy |
 Frank JaquetWarren Hunter | Warren Hunter |
 Forrest TaylorOtto Wolfe | Otto Wolfe |
 Jay NovelloHeinrick | Heinrick |
 Tom LondonProf. Crawford | Prof. Crawford |
 Jack IngramRiggs | Riggs |