A small boy, Dickie Goodwin, finds some strychnine pills mixed with sweets in a stolen car left in a deserted garage. With them he buys his way into the Rocket Gang. Brian, the leader, shares out the pills for swaps next day. One of the gang eats hers and collapses. The police frantically search for the pills and a broadcast appeal is made. Brian hears this and reaches the gang at Battersea funfair just in time to save them.
| Actor | Role |
|---|---|
| GGareth RobinsonBrian | Brian |
 Len JonesPhil Streaker | Phil Streaker |
| RRobert FergusonHarry | Harry |
 Sally ThomsettGerty | Gerty |
| LLinda HansenNellie | Nellie |
| RRonnie JohnsonDickie Goodwin | Dickie Goodwin |
 Kenneth ColleyCovent Garden porter | Covent Garden porter |
| BBarbara AshcroftMrs. Briggs | Mrs. Briggs |
| BBasil BealeMr. Briggs | Mr. Briggs |
 Timothy BatesonGoldstone | Goldstone |
 Ian FlemingDoctor | Doctor |
 Warren MitchellLofty | Lofty |
| EEdward CastPolice Constable Weaver | Police Constable Weaver |
 Ronald Leigh-HuntSergeant | Sergeant |
| JJack HowlettInspector | Inspector |
| KKen HowardMobile Constable | Mobile Constable |
 Leslie DwyerPolice Constable Robinson | Police Constable Robinson |
| WWilliam ForbesTitch | Titch |
| MMyrtle ReedMrs. Goodwin | Mrs. Goodwin |
 Roberta WoolleyNurse | Nurse |
| GGeorge RoderickGreengrocer | Greengrocer |
| JJoe RitchieMilkman | Milkman |
 Harry FowlerCovent Garden porter | Covent Garden porter |