Grant and his new protegé intern work to devise a kit to detect the presence of the toxin known as ""Red Tide."" When their attempts fail, Grant is saddened to discover his assistant's ambition for fame overshadowing his professional ethics.
| Name | Type | Role | |
|---|---|---|---|
| Linda F. Jones | Writer | ||
| Robert Wisden | Guest Star | ||
| Ian Belcher | Guest Star | ||
| Jenny Wright | Guest Star | ||
| Miriam Smith | Guest Star | ||
| Robert Metcalfe | Guest Star | ||
| Alan Simmonds | Director |