An amateur detective goes on the trail of a gang of violent criminals.
| Actor | Role |
|---|---|
 Hugh WakefieldJohn Dain | John Dain |
 Gordon HarkerTansey | Tansey |
 Garry MarshDelbury | Delbury |
 Nicholas HannenLyall | Lyall |
| RRobert FarquarsonCount Lazard | Count Lazard |
 Renee ClamaMarcia | Marcia |
 Dennis WyndhamShaughnessy | Shaughnessy |