Did Commander David Wheeler deliberately alter his ship's course to smash into and sink a mysterious vessel? His son, Richard, is convinced that he didn't. With friends Lucy and Peter, he sails out into the Bristol Channel to find the answer.
| Name | Type | Role | |
|---|---|---|---|
| Don Houghton | Writer | ||
| Simon MacCorkindale | Guest Star | Lt. Commander Maddox | |
| Robert Fuest | Director | ||
| Peter Graham-Scott | Director |