English schoolboy and his Dutch pen friend chase a diamond smuggling gang in Holland.
| Directing | Derek Williams | Director |
| Writing | Ian Dalrymple | Writer |
| Writing | Derek Williams | Writer |
| Production | Ian Dalrymple | Producer |
| Sound | Muir Mathieson | Original Music Composer |
| Camera | Geoffrey Gurrin | Director of Photography |
| Editing | Ernest Hosler | Editor |
| Directing | David Bracknell | Assistant Director |
| Camera | David Osborne | Camera Operator |
| Sound | Dock Mathieson | Conductor |
| Directing | Muirne van Wyk | Continuity |