Earth, the future. The genius Sylvest twins, child prodigies, are kidnapped by the mysterious Professor Edgeworth and taken to the planet Jaconda. But who is Edgeworth? Why does he serve the giant slug Mestor? And what is Mestor's plan?
| Name | Type | Role | |
|---|---|---|---|
| Anthony Steven | Writer | ||
| Andrew Conrad | Guest Star | ||
| Oliver Smith | Guest Star | ||
| Maurice Denham | Guest Star | ||
| Helen Blatch | Guest Star | ||
| Kevin R. McNally | Guest Star | ||
| Dione Inman | Guest Star | ||
| Barry Stanton | Guest Star | ||
| Gavin Conrad | Guest Star | ||
| Peter Moffatt | Director |