Drake goes undercover to discover who is blackmailing a general's brother.
| Name | Type | Role | |
|---|---|---|---|
| Philip Broadley | Writer | ||
| Jack Gwillim | Guest Star | ||
| Patricia Haines | Guest Star | ||
| Richard Owens | Guest Star | ||
| Georgina Ward | Guest Star | ||
| Mike Pratt | Guest Star | ||
| Griffith Jones | Guest Star | ||
| Michael Truman | Director |