WPC Marie Watson goes undercover to infiltrate a gang of counterfeiters.
| Actor | Role |
|---|---|
| AAdrienne ScottPolicewoman Watson | Policewoman Watson |
 Jackie CollinsLil Smith | Lil Smith |
 John BlytheFrankie | Frankie |
 Graham StarkPlum | Plum |
| MMichael PartridgeLeon | Leon |
| JJohn CrowhurstMickey | Mickey |
| KKen HaywardDropper | Dropper |
 Diana ChesneyInspector | Inspector |
| GGeoff ThompsonGeoff Roberts | Geoff Roberts |
| BBrian GoffC.I.D. | C.I.D. |
| JJack GrayC.I.D. | C.I.D. |
| JJoyce JeffreyWardress | Wardress |
| MMichael BeintPolice Dispatcher (uncredited) | Police Dispatcher (uncredited) |