The Doctor meets Professor Parry and his archaeologists on the planet Telos. The expedition is there to unearth the remains of Cybermen who died out long ago. Or did they..?
| Name | Type | Role | |
|---|---|---|---|
| Kit Pedler, Gerry Davis | Writer | ||
| Shirley Cooklin | Guest Star | ||
| Ray Grover | Guest Star | ||
| Aubrey Richards | Guest Star | ||
| Alan Johns | Guest Star | ||
| George Pastell | Guest Star | ||
| George Roubicek | Guest Star | ||
| Morris Barry | Director |