David, a nine-year-old boy, talks his father into getting him a giant turtle. And there is more to David's desire for this unusual pet than meets the eye. Then Sam Jenner, a rugged American, gets drawn into David's holiday adventure in Jamaica.
| Name | Type | Role | |
|---|---|---|---|
| Robin Chapman | Writer | ||
| John Nettleton | Guest Star | ||
| Tony Osoba | Guest Star | ||
| Paul Spurrier | Guest Star | ||
| Robert Arden | Guest Star | ||
| David Buck | Guest Star | ||
| Alison Coleridge | Guest Star | ||
| Vivien Heilbron | Guest Star | ||
| Astley Harvey | Guest Star | ||
| Oscar James | Guest Star | ||
| William Hootkins | Guest Star | ||
| Stuart Whitman | Guest Star | ||
| Alan Gibson | Director | ||
| Roald Dahl | Director |