A crook is implicated in blackmail, greed for emeralds and secret formula and murder.
| Actor | Role |
|---|---|
 Tod SlaughterTerence Reilly | Terence Reilly |
 Patrick BarrInsp. Morley | Insp. Morley |
| TTucker McGuireEileen Trotter | Eileen Trotter |
 Ingeborg von KusserowMarie (as Ingeborg Wells) | Marie (as Ingeborg Wells) |
| FFrank HawkinsInsp. Cranshaw | Insp. Cranshaw |
| LLeonard SharpMullins (as Len Sharp) | Mullins (as Len Sharp) |
| AAnne ValerySusan | Susan |
 David DaviesGeorge | George |