The Cybermen have launched their deadly megatron bomb which will destroy all life on Earth, unless the Doctor can deactivate the homing signal.
| Name | Type | Role | |
|---|---|---|---|
| Derrick Sherwin | Writer | ||
| Charles Finch | Guest Star | ||
| Peter Thornton | Guest Star | ||
| Clifford Earl | Guest Star | ||
| John Spradbury | Guest Star | ||
| Richard King | Guest Star | ||
| Douglas Camfield | Director |