Drake must clean up after the government bungles an attempt to silence a young scientist.
| Name | Type | Role | |
|---|---|---|---|
| Ralph Smart | Writer | ||
| Donald Jonson | Writer | ||
| Elizabeth Shepherd | Guest Star | ||
| Lyndon Brook | Guest Star | ||
| Derek Francis | Guest Star | ||
| Gordon Whiting | Guest Star | ||
| John Brooking | Guest Star | ||
| Alf Joint | Guest Star | ||
| Michael Anthony | Guest Star | ||
| Mark Lester | Guest Star | ||
| Reginald Barratt | Guest Star | ||
| Stuart Burge | Director |