Drake joins forces with a European doctor when workers at an African nuclear power plant fall ill.
| Name | Type | Role | |
|---|---|---|---|
| Ralph Smart | Writer | ||
| Brian Clemens | Writer | ||
| Walter Gotell | Guest Star | ||
| Lawrence Davidson | Guest Star | ||
| William Peacock | Guest Star | ||
| Eric Pohlmann | Guest Star | ||
| Barry Shawzin | Guest Star | ||
| Zena Marshall | Guest Star | ||
| Patsy Smart | Guest Star | ||
| Bernard Archard | Guest Star | ||
| Anthony Dawson | Guest Star | ||
| Joseph Cuby | Guest Star | ||
| Marne Maitland | Guest Star | ||
| Anthony Bushell | Director |