A group of children in the East End of London belong to a police sponsored scheme called '4D Special Agents'.
| Actor | Role |
|---|---|
| LLisa EastmanJane Bowman | Jane Bowman |
 Dexter FletcherSteve Fraser | Steve Fraser |
| SSarah JerkinsTricia | Tricia |
 Paul J. MedfordDanny | Danny |
| PPhilip CookOlly | Olly |
 Stewart BevanDet. Sgt. Crane | Det. Sgt. Crane |
| JJames CoyleSpider | Spider |
 Neil HallettDet. Insp. Porter | Det. Insp. Porter |
 Mark JonesSgt. Bowman | Sgt. Bowman |
| PPaul LutySteve's Grandfather | Steve's Grandfather |
 Bryan MarshallRay | Ray |
| KKen ShorterEddie | Eddie |