Professor Parry and his team begin to unlock the secrets of the Cybermen's tomb. But there are some amongst the explorers who have a dark agenda of their own.
| Name | Type | Role | |
|---|---|---|---|
| Gerry Davis, Kit Pedler | Writer | ||
| Ronald Lee | Guest Star | ||
| Hans De Vries | Guest Star | ||
| Kenneth Seeger | Guest Star | ||
| George Roubicek | Guest Star | ||
| Shirley Cooklin | Guest Star | ||
| Charles Pemberton | Guest Star | ||
| George Pastell | Guest Star | ||
| Aubrey Richards | Guest Star | ||
| Morris Barry | Director |