Steve runs away from home, having argued with his father, and hides in a slate mine where his friend Paul finds him and brings him back. However, on returning to their village the two boys find the place completely deserted. Or so they think.
| Actor | Role |
|---|---|
| JJayne CollinsMaureen Rogers | Maureen Rogers |
| AAndrew AshbyPaul Jenkins | Paul Jenkins |
| TToby BridgeSteve Rogers | Steve Rogers |
 Dudley SuttonMike Ellis | Mike Ellis |
 Frederick TrevesSuperintendent Parry | Superintendent Parry |
| HHazel McBrideJean | Jean |
 John ForgehamSam Rogers | Sam Rogers |
| JJohn BarcroftPeter Jenkins | Peter Jenkins |
| AAnn WindsorHilda Jenkins | Hilda Jenkins |
| MMike LewinPC Edwards | PC Edwards |
 Morris PerryProfessor Stonely | Professor Stonely |
| RRoger LlewellynPC Morgan | PC Morgan |