Senior officials in the British, American and Russian governments all receive the same cryptic and unsigned message - "I Can Destroy The Sun". What can it mean?
| Name | Type | Role | |
|---|---|---|---|
| Newton D'Abbes | Writer | ||
| Jimmy Sangster | Writer | ||
| Jennifer Wright | Guest Star | ||
| Maurice Denham | Guest Star | ||
| John Barron | Guest Star | ||
| John Robinson | Guest Star | ||
| Carmel McSharry | Guest Star | ||
| Leslie Sands | Guest Star | ||
| Paddy Webster | Guest Star | ||
| Robert James | Guest Star | ||
| Jan Conrad | Guest Star | ||
| Robert Ayres | Guest Star | ||
| Wilfred Eades | Director |